All Web 2.0

Powerset

Powerset is working on building a search engine that can find targeted answers to user questions (as opposed to keyword based search). For example, when confronted with a question of the form 'which U.S. state has the highest income tax?', conventional search engines ignore the question and instead do a search on the keywords 'state, income and tax'. Powerset's product, on the other hand, attempts to use natural language processing to understand the nature of the question and then to search and...

Google search

Google search is a Web search engine owned by Google, Inc., and is the most used search engine on the Web. Google receives several hundred million queries each day through its various services. Google search was originally developed by Larry Page and Sergey Brin in 1997. PageRank Google's algorithm uses a patented system called PageRank to help rank web pages that match a given search string. The PageRank algorithm computes a recursive score for web pages, based on the weighted sum of ...

Exalead

Exalead is a French search engine involved in the Quaero project. Exalead provides thumbnail previews of the target pages along with the results, and allows advanced refining on the results page (language, geographic location, file type, categories) but also further data refinement, such as rich content (audio, video, RSS) and related terms, allowing users to browse the web by serendipity. The company is a société anonyme based in Paris and founded in 2000 by François Bourdoncle. Its ...

Cuil

Cuil is a search engine that organizes web pages by content and displays relatively long entries along with thumbnail pictures for many results. It claims to have a larger index than any other search engine, with about 120 billion web pages. It went live on July 28, 2008. Cuil's privacy policy, unlike that of other search engines, says it does not store users’ search activity or IP addresses Cuil is managed and developed largely by former employees of Google: Anna Patterson, Russell Power...

Baidu

Baidu is the leading Chinese search engine for websites, audio files, and images. Baidu offers 57 search and community services including an online collaboratively-built encyclopedia (Baidu Baike), and a searchable keyword-based discussion forum. As of 21 March 2008, Baidu is ranked 19th overall in Alexa's internet rankings. In December 2007 Baidu became the first Chinese company to be included in the NASDAQ-100 index. Baidu provides an index of over 740 million web pages, 80 million ima...