Specialty Search Engines

Dogpile
http://www.dogpile.com
Popular metasearch site owned by InfoSpace that sends a search to a customizable list of search engines, directories and specialty search sites, then displays results from each search engine individually.

Vivisimo
http://vivisimo.com/
Enter a search term, and Vivismo will not only pull back matching responses from major search engines but also automatically organize the pages into categories. Slick and easy to use.

Kartoo
http://www.kartoo.com
If you like the idea of seeing your web results visually, this meta search site shows the results with sites being interconnected by keywords.

Mamma
http://www.mamma.com
Founded in 1996, Mamma.com is one of the oldest meta search engines on the web. Mamma searches against a variety of major crawlers, directories and specialty search sites. The service also provides a paid listings option for advertisers, Mamma Classifieds.

SurfWax
http://www.surfwax.com
Searches against major engines or provides those who open free accounts the ability to chose from a list of hundreds. Using the "SiteSnaps" feature, you can preview any page in the results and see where your terms appear in the document. Allows results or documents to be saved for future use.

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Specialty Choices

The metacrawlers listed below let you meta search in specific subject areas.

Family Friendly Search
http://www.familyfriendlysearch.com
Meta search service that queries major kid-friendly search engines.

GoFish
http://www.gofish.com
Meta search service for licensed and commercially available digital media downloads including music, movies, music videos, ringtones, mobile games and PC games, searching over 12 million media files.

Searchy.co.uk
http://www.searchy.co.uk
Searches 15 U.K. engines. The advanced search form allows you to change the order that results are presented, either by speed or manually to suit your own preferences.

Watson for the Macintosh
http://www.apple.com/downloads/macosx/internet_utilities/watson.html
Watson is a "Swiss Army Knife" with nineteen interfaces to web content and services -- an improvement on Sherlock, with nearly twice as many tools, including Google Searching.

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All-In-One Search Pages

Unlike metacrawlers, all-in-one search pages do not send your query to many search engines at the same time. Instead, they generally list a wide-variety of search engines and allow you to search at your choice without having to go directly to that search engine.

Google Versus Yahoo Tool
http://www.langreiter.com/exec/yahoo-vs-google.html
See visually how results compare on Google versus Yahoo.

One Page MultiSearch Engines
http://www.bjorgul.com/
Clean interface lets you query major services from one page.

Proteus
http://www.thrall.org/proteus.html
Lets you easily send your search to one of several search engines. It also has links to search engine help pages.

Queryster
http://www.queryster.com
Queryster lets you quickly get results from one of several major search engines, simply by clicking an icon.

YurNet
http://www.yurnet.com

Google News
http://news.google.com/
Provides the ability to keyword search across thousands of news sources found through crawling the web, while also providing the ability to browse categories of news where headlines are assembled automatically.

Yahoo News
http://news.yahoo.com/
Similar to Google News, you can keyword search across thousands of news sources found by Yahoo's news crawling partner, Moreover, as well as stories fed by major wire services and news partners. Yahoo Full Coverage lets you browse categories of news, where articles and resources have been hand-assembled by Yahoo editors.

AllTheWeb News
http://www.alltheweb.com/?cat=news
This Overture-owned service lets you keyword search against content gathered from news sites across the web. Advanced news search page allows narrowing news sources to particular categories, such as sports or technology.

AltaVista News
http://news.altavista.com/
This Overture-owned service lets you keyword search against news content found by sister-search engine AllTheWeb (above) and content supplied by major news partners such as the New York Times. Drop-down options under the search box make it easy to narrow results by news topic, world region or to some major news sources. Basic news headline browsing by category is also offered.

Daypop
http://www.daypop.com/
Daypop lets you keyword search through content it finds from crawling thousands of news sites throughout each day. You can also search through weblog content or information from RSS feeds.

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News Hubs

DailyEarth.com
http://dailyearth.com/
A guide to newspaper web sites and news search resources around the world. Formerly known as NewspaperDirectory.com.

HeadlineSpot
http://www.headlinespot.com/
Links to hundreds of sources of news and information, organized in categories. Major categories include news by subject, news by region, media type, opinion pages, and so on. Other categories point to resources helpful to news junkies. These include links to cool tools, resources for journalists, kids and teachers, and a category that takes you behind the news.

Kiosken
http://www.esperanto.se/kiosk/engindex.html
A guide to newspaper web sites around the world.

NewsDirectory
http://www.newsdirectory.com/
Easy access to thousands of news sources, including newspapers, magazines and television stations worldwide.

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RSS News Feeds & Blog Search Engines

Blogdex
http://blogdex.media.mit.edu/
Long-standing services that leverages blog links for discovery purposes. Think of it as a "buzz index" according to blogs, where the goal is to show you which links anywhere on the web are currently getting the most references from bloggers.

Blogdigger
http://www.blogdigger.com/
While it's called Blogdigger, this service also includes some non-blog content, as it is based on searching through RSS feeds. Feeds are either submitted or found via the Weblogs.com site.

Blogging Headline News
http://blogging-news.info
This news site samples 12,000 RSS feeds, selecting about 5,000 posts three-times a day to feature in about 130 different categories. It's designed to be an online blogging magazine. You can also keyword search for material.

BlogStreet
http://www.blogstreet.com/
A wonderful blog discovery and investigation tool that allows you to view information about a blog, such as other blogs that seem to be related to it, people linking to its entries, how it ranks in the blogging world, and much more. There's also a range of RSS tools, such as the ability to create an RSS feed for any blog (or ordinary web site) that lacks one. The site also contains a directory of existing RSS feeds that have been submitted to it or discovered. In addition, BlogStreet operates Info Aggregator, an outstanding software-free service lets you subscribe to RSS feeds and have posts delivered via email. You can also keyword search through blog and RSS posts.

CRAYON (CReAte Your Own Newspaper)
http://www.crayon.net/
This service doesn't use RSS feeds, but the concept of tailoring news to what you want is the same. To create your own newspaper, simply sign up for a free account and select the sources you want to include. There are hundreds of online newspapers to choose from. You can also include specialized sources, with topics including politics, business, weather, religion, sports and so on.

Fagan Finder: Weblogs, Journals, & RSS
http://www.faganfinder.com/blogs/
Superb all-in-one search page that lets you easily search a variety of blog/RSS search engines, plus provides related links on the subject.

Feedster
http://www.feedster.com/
Feedster lets you search against content distributed via RSS. That means it's essentially a blog search engine for many people, since so many blog entries are distributed via RSS. However, some non-blog newsfeeds are also included. Feedster's Images feature is designed to present a visual look at that day's blogging world. Feedster was originally known as Roogle when launched in March 2003 and absorbed the formerly separate RSS Search service in June 2003.

NewsIsFree
http://www.newsisfree.com
A long-standing major directory of RSS feeds. It organizes thousands of news feeds -- what it calls "news channels" -- into categories. You can browse the categories to find feeds of interest or do a search for feeds that mention your keywords in their titles and descriptions.

Syndic8.com
http://www.syndic8.com/
Another major directory of RSS feeds. It lets you look through thousands of RSS feeds that users have submitted or which have been added by volunteers to its collection. In other words, it's an Open Directory for RSS feeds.

Technorati
http://www.technorati.com/
Technorati is a great service. Plug in the URL of any web page, and you can quickly see what bloggers are saying about it by using the "Link Cosmos" feature. The Breaking News feature assembles top headlines automatically -- but these headlines come from blogs, rather than traditional news sources. A similar Current Events feature is also offered. Technorati's Top 100 also offers an "A-List" of popular blogs based on linkage patterns.

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Magazine & Periodicals Searching

HighBeam
Access to reference material, research information, periodical literature and more. Searching is free. You pay to view material you find. Previously called eLibrary and Researchville.

FindArticles.com
http://www.findarticles.com/
Let's you search through articles from over 300 sources, dating back to 1998, and view them for free. You can narrow your search to specific magazine categories, such as "Automotive," using a drop down option next to the search box. You can also search within a particular publication by using the "View Publications by Name" link, which appears below the search box. Find the name of the magazine you are interested in, click on its name, and the search box that appears searches against only that publication's content.

MagPortal
http://www.magportal.com/
Allows you to find magazine articles, plus you can order results by date or publisher. Articles can also be found by browsing a directory structure.

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Regional News Search Engines

Corante
http://www.corante.com
If you are after technology news, this service aims to deliver top articles each day in different areas. Stories are reviewed and classified by human editors.

iMenta
http://www.imente.com
Headlines from Spanish news sources. Requires payment to use.

Paperball
http://paperball.fireball.de/
Produced by the German Fireball search service, Paperball lets you search for German news.

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Images/Audio/Video

AllTheWeb
http://www.alltheweb.com/
Find images from across the web, as gathered by the AllTheWeb crawler. To image search, select the "Pictures" tab above the search box. To find video files, use the "Video" tab. Choose the "Audio" tab to find MP3 and other sound files.

AltaVista
http://www.altavista.com/
Find images, audio and video from across the web, as discovered by AltaVista's crawler technology. To image search, select the "Image" tab above the search box. For audio and MP3 files, use the "MP3/Audio" tab. For video, select the "Video" tab.

Ditto (images only)
http://www.ditto.com/
Search or browse to find pictures on the web. Matches are displayed in thumbnail format. Formerly known as Arriba Vista.

Google Images (images only)
http://images.google.com
Find images from across the web, as discovered by Google's crawler-technology.

Kazaa Media Desktop (MP3 only)
http://www.kazaa.com/
Kazaa is widely acknowledged as the leading MP3 search and download service. Rather than crawling the web to gather music listings, Kazaa lets you search against a collection of music files that other Kazaa users contribute. That's a great system for all those MP3 searchers who are after free music downloads and who aren't concerned about copyright restrictions.

Lycos Pictures and Sounds
http://multimedia.lycos.com/
The Lycos multimedia search service. Lets you find pictures from licensed collections and from across the web. Also provides options to search for audio & MP3 files, as well as video clips.

MIDI Explorer (MIDI sound files only)
http://www.musicrobot.com/
Allows you to search for MIDI files.

The Music Finder (artists & songs, not files)
http://www.music-finder.net/
Enter some bands or music artists, and the Music Finder will suggest others you may wish to consider. The search engine has a database of over 13,000 bands and artists.

Picsearch (images only)
http://www.picsearch.com/
Presents image results from across the web.

Singingfish (audio/video only)
http://www.singingfish.com/
Singingfish lets you locate audio or video files from across the web, through its own crawling activity and partnership with sites that provide feeds through free and paid deals. Singingfish lets you locate MP3 music files, as well as QuickTime, RealMedia and Windows Media files, as well. These formats are used to record content such as movie trailers, sporting events highlights, live music events, video news clips and more.

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Radio & TV Programs

SpeechBot
http://speechbot.research.compaq.com/
Great service that lets you search through the audio files of popular US radio programs. Enter a subject, and you'll be shown matching programs and even be taken to the exact points in the shows where the subject is being discussed.

PublicRadioFan.Com
http://www.publicradiofan.com/
A customizable web site that provides one-click access to public radio programming from around the world.

Radio-Locator
http://www.radio-locator.com/
A searchable database of over 10,000 radio station web pages and 2,500 audio streams. This directory was formerly called the MIT List of Radio Stations on the Internet.

TheFeedRoom
http://www.feedroom.com/
View segments from local television newscasts on your computer. A searchable database of current stories is available. May not load if you block cookies, lack Flash or other browser components.

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Major Children's Guides & Directories

The kid-safe directories below use human beings to filter out sites that might be considered objectionable for viewing by children.

Ask Jeeves For Kids
http://www.ajkids.com/
Ask Jeeves is a unique service where you enter a question, and Ask Jeeves tries to point you to the right web page that provides an answer. At Ask Jeeves For Kids, answers have been vetted for appropriateness. Also, if Ask Jeeves cannot answer a question, it pulls results from various search engines in its metacrawler mode. At Ask Jeeves For Kids, no site that is on the CyberPatrol block list is supposed to be listed.

KidsClick!
http://www.kidsclick.org/
Backed by librarians, KidsClick lists about 5,000 web sites in various categories.

Looksmart's Kids Directory
http://search.netnanny.com/?pi=nnh3&ch=kids
The Kids Directory is a listing of over 20,000 kid friendly websites that were hand picked by employees of Looksmart subsidiary Net Nanny and vetted for quality. Looksmart also offers a safe search of the entire web, using Net Nanny software to filter Wisenut search results, as well as a free toolbar that uses the same service.

Yahooligans
http://www.yahooligans.com/
Yahoo for kids, designed for ages 7 to 12. Sites are hand-picked to be appropriate for children. Also, unlike normal Yahoo, searches will not bring back matched found by crawling the web, if there is no match from within the Yahooligan listings. This prevents possibly objectionable sites from slipping onto the screen. Additionally, adult-oriented banner advertising will not appear within the service. Yahooligans is the oldest major directory for children, launched in March 1996.

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Answer Searching & Answer Search Engines

What's answer searching? It's when someone is looking for the answer to something, rather than a specific web site -- though web sites often contain answers. An answer search engine? That's a service that specializes in offering direct answers to questions, rather than links to sites. Some answer search engines to consider are below.

AllExperts.com
Pick a category, then choose a volunteer, then ask your question.

Answers.com
Provides access to fast facts and other information from over 100 reference sources. Formerly called GuruNet. Review:

AskA+ Locator
Got a question? This service from the Virtual Reference Desk will connect you to an expert in one of many areas, or you can search for past answers to questions.

BrainBoost
Designed to let you enter search terms in natural language. It then examines your sentence, rewrites it in a way that it thinks best and submits it to various different major search engines. When results come in, it actually downloads all the pages listed, then extracts sections that it thinks provides the answer.

Collaborative Live Reference Services
Not an answer service but a guide to live reference/answer services worldwide.

Experts Exchange
Fee-based "ask an expert" site for information technology questions, such as about programming languages, operating systems and software applications.

Factbites
Designed to bring back "encyclopedia-style" content, meaning it will try to extract what it assumes are facts from web pages or from online encyclopedia, if it can find them.

Facts.com
Fee-based, web version of the legendary Facts on File reference service which is available free online from many public and university libraries.

Google Answers
A program from Google that allows users to get personal answers from a screened researcher, in exchange for a fee.

HighBeam
Access to reference material, research information, periodical literature and more. Searching is free. You pay to view material you find. Previously called eLibrary and Researchville.

Information Please
Information Please almanacs are favorites among researchers who need trustworthy facts. This site allows searching across Information Please's various almanacs, its encyclopedia and its dictionary.

ObjectGraph
Allows you to find definitions based on a word list using a version of the 1913 edition of Webster's Unabridged Dictionary (about 200,000 words) or the Free Online Dictionary of Computing (about 14,000 terms).

The Free Dictionary
Access to several dictionaries and encyclopedias, in one place.

US Library of Congress: Ask a Librarian
Email your research questions or chat online with a Library of Congress reference librarian. California offers a similar service, as does Australia.

Wikipedia
A free encyclopedia, written and edited by volunteers.

Wondir
Free service where you can ask questions on any topic and get answers from other members of the community.

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Computer Search Engines & Computer-Related Searching

The computer search engines below let you search for information relating to computers and computing.

Research Index
http://www.researchindex.com
Research Index is a search engine focusing on computer science research and articles. It's a wonderful browsing tool for finding articles and research relating to searching the web.

CNET Download.com
http://download.cnet.com/

Jumbo
http://www.jumbo.com/
Directory of freeware and shareware.

Tucows
http://www.tucows.com/
Thousands of software titles reviewed and available for download, including freeware, shareware, utilties, demo and more. Covers all major computing platforms.

The Macintosh Search Engine
http://search.applelinks.com/
A directory with links to everything Macintosh, including daily software updates, Internet and HTML resources, shareware, troubleshooting, programming, hardware and software vendors, and anything else Mac you can imagine.

KnowledgeStorm
http://www.knowledgestorm.com/
KnowledgeStorm's business-technology specialty search site provides software, service, reseller and hardware information on thousands of IT solutions, along with white papers, webinars and case studies.

Bitpipe
http://www.bitpipe.com/
Lets you search through summaries of reports from the leading IT analysts and IT vendor white papers. See what Forrester, Jupiter, Aberdeen, Giga and other analysts have to say on computing and IT topics.

Compilers.net
http://www.compilers.net/
Directory of resources about compilers.

Secureroot
http://www.secureroot.com/
Search engine with links about computer security, hacking and the Internet underground.

Sourcebank
http://www.devx.com/sourcebank/
Directory of programming resources. Lists Java, C, C++, research papers and online magazine articles.

AcornSearch
http://www.acornsearch.com/
Search engine that indexes web pages related to ARM, RISC OS and desktop workstations formerly made by Acorn Computers.

Palowireless.com Wireless Resource Center
http://www.palowireless.com/
Search engine and directory for wireless professionals. Covers Bluetooth, WAP, i-mode, HomeRF, HiperLAN, IEEE 802.11, SMS, 3G and other wireless technologies.

SPARC Product Directory
http://www.sparcproductdirectory.com/
Guide to SPARC compatible manufacturers, products and resellers

Enfused
http://www.enfused.com/
Games search directory and portal.

Gamez.com
http://gamez.com/
Directory of computer game sites.

ASP Resource Index
http://www.aspin.com
Directory of sites and information about Active Server Pages.

JSP Resource Index
http://www.jspin.com
Directory of sites and information about JavaServer Pages.

PDASupport.com
http://www.pdasupport.com
Search site for PDA support, software, reviews, magazines, news, articles, a guide, and other items as well.

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Financial and Business Search Engines

Looking for business or financial information? The business search engines below provide databases focused on just these topics.

Business.com
http://www.business.com/
Extensive business-oriented directory of web sites. Commercial listings are included on a payment basis, while non-commercial listings are included based on editorial criteria.

Business 2.0 Web Guide
http://www.business2.com/webguide/
Business-oriented directory of web sites, maintained by a team of professional research librarians.

DailyStocks.com
http://www.dailystocks.com/
Enter a stock symbol and see news stories, research, quotes and other information related to the company you ask about.

eBizSearch
http://www.ebizsearch.org
eBizSearch is an experimental search engine that focuses on a very small niche: academic and commercially produced articles and reports about e-Business.

FMLX
http://www.fmlx.com/
UK-oriented site that aggregates links about companies, stock information, analysis and research.

Hoover's Online
http://www.hoovers.com/
Hoover's is best known for its company information, with information on more than 12 million companies across 300 industries.

Inomics
http://www.inomics.com/cgi/show
This service is designed for economists and features a custom crawl of relevant sites. It launched in June 1998.

MoneyWeb Financial Search Directory
http://www.moneywebsearch.com/
Directory of sites relating to business, finance and money.

MSN Money's Stock Research Center
http://moneycentral.msn.com/investor/research/welcome.asp
Provides access to stock research resources, include a "Key Developments" database.

Portal B
http://www.portalb.com/
Portal B from Data Downlink Corporation is a focused web directory designed for business researchers who typically work in information intensive industries, such as banking, consulting, law, accounting and asset management, or large corporations. Portal B is not a free service, but rather is available only via a site license.

TradingDay.com
http://www.tradingday.com/
Enter a symbol and get back quotes, links to research and more.

WhisperNumber
http://www.earningsbase.com/
This site gives you the unofficial forecast of company earnings as determined by what people are saying on the web, determined in part by using search technology to gather the information.

Zapdata
http://www.zapdata.com/
Zapdata.com lets you build market research industry reports in real-time using Dun and Bradstreet business data, for free.

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Government Search Engines

The search engines below allow you to search for official government information.

FirstGov
Provides searchable access to information from the US government plus US state and local governments. Information can also be browsed by category.

Google US Government Search
Special edition of the Google search engine that limits results to pages from US government web sites.

SearchGov.com
Search engine that crawls US government and state government web sites.

usgovsearch
Searches across US government web sites and information from the NTIS (National Technical Information Service).

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Government Information on the Internet

http://gii.bernan.com
Both a well-respected book about finding government information online and an online service.

Searching for Public Records
Many governments have put public records online, but all too often in Invisible web databases that can't be found by search engines.  The Search Systems Public Records Locator can help.

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Invisible Web & Database Search Engines

There's lots of helpful information locked away in databases that can never be indexed by search engines. The services below let you search this "invisible web" or "deep web."

InvisibleWeb.com
From Intelliseek, the makers of the BullsEye meta search software, InvisibleWeb.com catalogs searchable resources across the web. Also used for the Lycos Invisible Web service, below.

LexiBot
Software tool designed to let you bring back information from "invisible" or "deep" web resources.

Lycos Invisible Web Catalog
Produced in partnership with Intelliseek, this search engine gives you access to all sorts of online databases.

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Direct Search

http://www.freepint.com/gary/direct.htm
A large collection of specialized search tools that often contain info that is hidden to search engines. Lovingly compiled by search expert Gary Price.

WebData
Comprehensive guide to searchable databases. Browse or search through listings.

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Legal Search Engines

The search engines below are designed to help you find legal information and law-related web sites.

FindLaw
A directory of legal web sites, produced by the people behind LawCrawler.

LawCrawler
Google-powered search engine that returns information only from sites that have been identified as dealing with legal issues.

Law.com
You won't find the ability to search legal-related web pages, but there are lots of links, and the service offers free email assistance if you still can't find what you are looking for, after visiting the site. Simply click on the Free Help button at the top of the home page to get help.

U.S. Trademark Search Page
Enter a few words, and you can quickly discover if a US trademark has been registered containing them. It's free, easy and comes courtesy of the US Patent and Trademark Office. The link above is to the "Combined Marks" search page, which is very easy to use.

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Mailing Lists Search Engines

Looking for a good email list to subscribe to? The mailing list search engines below will point you in the right direction.

Liszt
Long a favorite for those looking for mailing lists.

E-Zine List
Long running list of mailing lists maintained by John Labovitz. Unfortunately, it is not searchable.

List of Lists
Search or browse for lists of interest.

Publicly Accessible Mailing Lists (PAML)
A long-time and well-known place to find mailing lists.

eGroups
eGroups allows you to search for mailing lists of interest, or to read actual messages and post via an online interface. You can also start your own mailing list for free.

E-ZineZ
Listing of email newsletters.

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Medical Search Engines

Less exciting than the TV show "ER" but far more practical, these medical search engines help you find web pages dealing with diseases and medical issues.

Health On The Net: MedHunt
MedHunt uses both humans and web crawling to build its index of medical information. Searches can be narrowed by region, and a French interface is available.

MedicineNet.com
Medical information contributed by over 50 doctors and health professionals.

MedlinePlus
Medical information from the US National Library of Medicine and the US National Institutes of Health.

OmniMedicalSearch.com
Meta search major medical search engines and databases from this new service.

WebMD
Long-standing portal of health and medical information.

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Searching Newsgroups / Usenet / Forums

Anyone who's ever struggled to find a relevant newsgroup for a particular topic by looking at newsgroup names will find the search engines below incredibly helpful.

For example, say you wanted to find discussions about online shopping. You could scan the list of newsgroups and hope to find something like alt.online.shopping. Instead, just enter those words into a newsgroup search engine, and you'll be presented with messages and newsgroups relevant to the topic.

Newsgroup search engines are also is a great way for journalists to track down potential sources. For web developers and marketers, searching newsgroups can show you exactly which ones are relevant to your needs. And for general users, newsgroup search engines can help point you to those talking about similar interests online.

Google Groups
Allows you to search through years of newsgroup postings or participate online. Formerly Deja News, the service was acquired by Google in early 2001.

Forum One
Allows you to search over 300,000 web-based discussion forums.

Arianna Usenet
Usenet search engine that allows searching, browsing, posting and decoding of articles which are in Italian newsgroups.

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Science Search Engines

The science search engines below let you find information within different fields.

ResearchIndex (CiteSeer)
http://www.researchindex.com
ResearchIndex (formerly called CiteSeer) is a computer science research search engine with a number of unique capabilities, including citation indexing, links to related and similar documents, bibliographic coupling and collaborative filtering.

Computer Science Research Papers
Cora allows you to search for computer science research papers in PostScript format from universities and labs all over the world.

Biocrawler
Directory and search engine for biological information.

Chemie.DE
Directory and search engine for information about chemistry. Click on the "search engine" link on the home page to search.

Scirus
Scirus combines a targeted crawler from FAST that focuses only on web sites with scientific content, with Elsevier's massive scientific information resources drawn from thousands of journals and books.

Search4Science
Search4Science is a search engine put together by scientists for scientists. It shows -- if you enter simple keyword searches you're often presented with related scientific terms to expand or limit your query. The service is powered by Northern Light, so results are also clustered in Northern Light's Custom Search Folders.

Biolinks
A search engine for scientists, with links to journals, organizations, companies and more. It spiders the web and has human-categorized results.

SciSeek
SciSeek is a focused web directory created by human editors. It's a useful tool for browsing for information in a specific scientific area.

iCivil Engineer
catalogs Internet resources of civil engineering technology; covering all disciplines: architectural, construction, environmental, geotechnical hydraulic, structural, surveying and transportation

MathRix
MathRix est un annuaire de recherche francophone specialse dans les sites mathematiques. MathRix is a directory of web sites in French and about mathematics.

PSI - Polymer Search on the Internet
Search engine for the global polymer, plastic and rubber industries. Includes daily industry news.

SStreams
A directory of technical computing oriented links. Top categories are high-level programming languages like MATLAB, LabVIEW, Mathematica, and others.

On-Line Encyclopedia of Integer Sequences
http://www.research.att.com/~njas/sequences/
Wondering if a sequence of numbers you have matches any particular formula or pattern? This is one of those great little sites you'll want on your bookmark list, for seeking such answers.

O'Reilly Network Safari Bookshelf
http://safari.oreilly.com
Search across content from hundred of technical books from O'Reilly and other publishers. To view content from a particular book, you need to pay a monthly or yearly subscription. Pricing begins at US $10 per month, for access to up to five books.

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Shopping Search Engines

The shopping search engines below are designed to check prices at various online stores or locate e-commerce outlets by category.

Major Shopping Search Engines

BizRate
http://www.bizrate.com/
BizRate allows you to search for products from hundreds of online vendors. Features include merchant ratings, reviews, tax and shipping information, as well as a list of your own most searches and recently viewed products. Also powers some of the results provided by Lycos Shopping.

DealTime
http://www.dealtime.com
One of the major comparison shopping search engines on the web that integrates product reviews from Epinions, which it acquired in May 2003. Also owns Shopping.com, which essentially is a clean-search version of DealTime.

Froogle
http://www.froogle.com
Comparison shopping search engine from Google. Gathers listings from crawling the web and accepting product feeds vendors. 

Kelkoo
http://www.kelkoo.co.uk/
Major comparison shopping search engine for the United Kingdom and other European countries. According to the company, 16 out of the top 20 e-commerce sites in the UK are currently advertising through Kelkoo. Advertisers have the opportunity to reach customers in all nine European countries in which Kelkoo operates.

MSN Shopping
http://shopping.msn.com/
MSN Shopping, formerly known as eShop, offers Buyer's Guides with tips and tools, editor suggestions, and other features beyond the price comparisons offered by other shopping search sites.

mySimon
http://www.mysimon.com/
One of oldest comparison shopping sites on the Web, featuring the ability to search for products from thousands of merchants or browse by product category.

NexTag
http://www.nextag.com/
Comparison shopping search engine with "TruePrices" feature that shows prices including tax and shipping charges, as well as user ratings.

PriceGrabber.com
http://www.pricegrabber.com/
Comparison shopping search engine with ability to see member ratings of products. Available in English or Spanish, including specialized product searches for retailers in Mexico and Brazil.

Yahoo Shopping
http://shopping.yahoo.com/
Yahoo Shopping connects you with thousands of merchants -- traditional retail stores, name-brand catalog companies, small boutiques, and specialty vendors. Listings come from merchants hosted in Yahoo Store and through partnerships with others, in addition to online merchants throughout the web. Provides access to user reviews, as well.

Other Choices

Buyer's Index
http://www.buyersindex.com/
Buyer's Index lists information from thousands of mail order companies, web shopping sites, classified ad sites and other venues. Shows links to merchant ratings from BizRate

Dulance
http://www.dulance.com/
Shopping search engine that pulls back likely product pages from across the web, rather than relying on merchant feeds. It sends your query out to one of four major search engines (Google, AllTheWeb, Inktomi or Teoma) but then should only list pages where you can actually buy a product you are interested in. Product reviews, magazine articles, discussions and opinions are filtered out. The site launched in September 2002.

ePublicEye.com
http://www.epubliceye.com
Collects customer satisfaction reports from shoppers that purchase from online merchants. You can also comparison shop with rated merchants using the service.

PriceScan
http://www.pricescan.com/
Comparison shop in different categories such as books, electronics and sporting goods. Promotes itself as "unbiased" because it does not accept money from vendors to be listed, which is commonplace in the shopping search engine space.

Specialty Choices

AddAll
http://www.addall.com/
Comparison shop for books across 40 online book stores from one place.

CatalogCity.com
http://www.catalogcity.com/
Catalog City allows you to Order free mail order catalogs or shop online.

Google Catalogs
http://catalogs.google.com/
Search through listings from thousands of mail order catalogs that have been digitized by Google.

Specialoffers.com
http://www.specialoffers.com/
Find special offers, freebies and free trials available online.

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Travel Search Engines

Below are search engines that help you locate travel and destination information. If you are a Search Engine Watch member, please see the Search Types: Travel section of Search Engine Watch's Search Topics area for the very latest on travel search engine news since this page was last updated, as well as some back archives and related material.

Allcheckin
Travel search engine especially aimed at the UK market.

AOL Pinpoint Travel
Searches a broad array of online travel agencies and travel provider sites. Includes major hotel chains, airlines and even some low-fare airlines.

Dohop
Allows you to find schedule and fares for more 300 European destinations.

Expedia
Long-standing travel search site letting you find prices on flights, hotels, car rental, vacation packages and more.

IgoUgo
Online travel community and searchable vertical database of travel reviews owned by Sabre, parent of Travelocity.

Kayak
Allows comparison shopping for air fares, hotel rooms and car rentals from a wide-range of vendors.

Mobissimo
Comparison travel shopping search service for airfares, hotels and cars.

Orbitz
Helps you get and compare prices on flights, hotels, cars and more.

SideStep
Search across the web for prices on cars, hotels and airfares and more.

Travelazer
Says it identifies sites as travel-related, then spiders them to provide searches that are focused to travel-related content.

Travelocity
Long-standing travel search site that helps you get prices on hotels, flights, hotels, rental cars and more.

TripAdvisor.com
Travel search engine that lets you locate reviews and information about destinations, hotels, resorts and vacations.

Yahoo Farechase
Search for flights, hotels or car rentals from this service that scans many travel sites offering these products.

Yahoo Travel
Get both price information on flights, hotels and more or travel guides for various destinations.

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