If you need to know how long it takes to get to the Neptune at the speed of light, visit WolframAlpha to get your answer. WolframAlpha doesn’t search web pages for answers, but computes the results to your customized questions based on human knowledge recorded in scientific resources, encyclopedias, government

Traditional search engines search documents and pages, Topsy searches current conversations on social media sites like Twitter, blogs, Flickr, Digg, Yelp, Identica and many other communities for your search term. It displays search results based on influence of the source.   Related posts: Search Engine Spider Simulator Social Media Search

Spacky picks up searches from Google, Yahoo and MSN and displays them side-by-side. Works pretty well, but doesn’t pick up lower search volume keywords and phrases.   Related posts: Keyword Trends Google Keyword Search Tool Keyword Suggestions Tool

Leapfish: The slogan in their search box says it all: you can choose from Google, Yahoo and MSN and get instant web, blog, images, news and video results on one page. Nice!   Related posts: Instant YouTube Search Monthly Keyword Search Volume Compare Yahoo and Google Search Results

It’s always amazing: to see all the personal information about you that’s available online. This people search engine finds age, addresses, relatives and more. It finds basic info, refers to other services and displays lots of ads. Searching social network profiles, pictures etc. is for pay only.     Related

If you want fewer search results per page, give Cuil search engine a try. It displays only a handful of search results, but also adds related categories alongside suggested results. A feature at the top of the page lets you view real time results. This may not be a search

Linkvendor’s analysis tool shows link popularity on major search engines, Alexa, PageRank, and Compete ranks, and Spamhaus blocked pages. It also shows if your domain is listed in the DMOZ and Yahoo directory. Related posts: Link Popularity Checker Free SEO Analysis Tool Search Engine Spider Simulator