Social Source Commons

Search engine that only crawls web sites that were bookmarked or voted for by people, in sites like del.icio.us, digg and reddit.

Search engine where users vote on the top results for a given search.

Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, a web administration interface and many more features. It runs in a Java servlet container such as Tomcat.

Drupal module that integrates Apache Solr Search with Views

Microsoft's search engine, formerly "Live", Bing has advanced search options and display features that give a searcher more information on the search results page.

RSS feed of search results by adding "&format=rss" to the URL

Message boards and forums are easily searchable through BoardReader allowing you to find topics, images, articles and comments instead of laboring through each message thread by itself.

BookFinder.com is an one-stop ecommerce search engine that searches over 100 million books for sale—new, used, rare, out-of-print, and textbooks.

Craigslist search engine

A Firefox extension that removes unwanted information (like ads, tracking and spam) and adds links from other sources to the search results.

These platforms enable organizations to store and track large numbers of electronic documents, including images, videos, office documents and other digital assets. This toolbox inspired by an NTEN Discussion.

A search server based on Lucene.

Digital media search engine.

Social media dashboard tool that offers real-time monitoring of social media activity.

Search millions of historical documents.

GoodSearch is a search engine which donates 50-percent of its revenue to the charities and schools designated by its users.

Have Google email you notifications of news, new web results, or new blog posts containing your desired search term.

Search the full text of books and discover new ones.

Fast file search for Windows computers.

Google Scholar provides a way to broadly search for scholarly literature.

Enter up to five topics and see how often they've been searched on Google over time.

Search engine that attempts use the searcher's "meaning" for its results.

Real time search across blogs, Twitter, web, MySpace, news and images

Automates the process of batch uploading, keyword tagging, categorizing, sharing, locating, finding, searching, viewing, publishing, collecting, versioning, approving, grouping, batch downloading, maintaining, securing, marketing, and optionally licensing or selling digital assets.

Summarizes the top results of a Google search in minutes.

KartOO is a metasearch engine with visual display interfaces. When you click on OK, KartOO launches the query to a set of search engines, gathers the results, compiles them and represents them in a series of interactive maps

Search engine for developers.

The blogroll generated at nonprofitblogxechange plus the old nonprofit technology Search-O-Rama to bring you MANSEO -- Mother of All Nonprofit Search Engines Optimized.

Meta-seach engine.

MoRU is an application that provides an enhanced interface to Apple's Spotlight searching tool

Search site for finding donors for nonprofit organizations in three easy steps

Search engine whihc uses a variety of different online tools for one interface.

Onkosh is the search portal for the Arabic web. Anything in Arabic on the web, we've got it. Anything Arabic-related in English or French on the web, we've got it.

Search engine that shows images of pages in the results.

American podcast search directory.

Quintura is a search engine based on a visual search engine technology and makes use of Yahoo’s index.

Tag search optimizer

Website and search engine where advertising revenues are used to fight poverty.

Search engine that merges real-time tracking of Twitter and other live feeds with traditional news and media search.

Select a bit of text in a message, right-click, and send it to the search engine of your choice. Pre-configured with Google, Technorati, Yahoo, Ask, and many more, easy to add your own.

Freeware search tool for Windows.

This is a big, fat, wide-reaching net of social media searches to alert you every time your brand or product is mentioned by anybody on a slew of social media sites, including flickr, twitter, friendfeed, digg etc.

Social Mention allows you to search various social media outlets at the same time, giving you information on keywords and how they show up in resources like blogs, news, comments and microblogging sites.

Customizable search engine that can be embedded in a website.

Spurl.net is a free on-line bookmarking service and search engine.

Command-line search engine.

Blog search engine

A search engine powered by tweets

Tool to search recent Twitter messages for specific words or phrases.

Search Twitter in realtime

Complete SEO software package. Helps identify best performing keywords. There is a free version.

Hosted, full-featured digital asset management platform

Wolfram Alpha is a search engine that seeks to give you an answer, rather than a list of search results that could be the answer.

As a result, it is growing increasingly efficient at answering specific questions and providing detailed information while not well-suited for inquiries that seek to find general information on something.

A website that gives extensive information on social impact and presence as well as information on the website.

Search engine, news, games, e-mail, etc.

Search, view and manage documents for Macs

Search engine aggregator.