Dmoz.org lets you investigate a broad topic by exploring suggested sub-topics allowing you to narrow things down to a singular topic.
Note: Dmoz.org has been shut down as of March 17, 2017. It’s former contents are available via mirror at the link above.
Infomous makes mind maps. Find out what’s trending or ask Infomous to help you find information on your favourite topic by clicking the Search file tab at the top.
instaGrok will make connections to your topic and illustrate them in the form of a mind map.
Historica: A Canadian Encyclopedia
Encyclopedia Britannica: A globally recognized encyclopedia.
Whonu searches just about everything, from popular search engines like Google and Yahoo! to websites like digg, del.icio.us and reddit. You can also filter your search by types of site, including .edu domains, or narrow your results to specific countries.
Dogpile searches other search engines, such as Google, Yahoo!, Bing and Ask, to bring you the best of the web in one handy results list. You can also feel good about using Dogpile because the site donates portions of its revenue to the American Society for the Prevention of Cruelty to Animals (ASPCA.)
Yippy is a unique meta search engine that delivers results in related clusters to help you find exactly what you need as fast as possible.
This meta search engine searches Google, Yahoo!, Bing, Ask, About, MIVA and others. You can use this engine to find information, images, videos, news, yellow page listings and white page listings.
Known as the ‘mother of all search engines,’ Mamma allows you to perform a general Web meta search like the above engines, or focus your results on Twitter, news feeds, images and video, local results and job opportunities.
Info.com returns results from everyone’s favorite search engines, including Google, Yahoo!, Bing and About. The site also offers filtering for subjects like flights, jobs, multimedia, shopping and more.
There are tons of different ways to use MsFreckles. You can search the entire web, search Google blogs, search UK sites only, search specific domains, search for multiple websites, search definitions, search scholarly papers – the list goes on and on.
Radio-Locator is the largest radio station search engine. You can use it to locate over 10,000 radio station websites and over 2,500 audio streams.
Users can search more than 32 million hours of video on Blinkx by keyword or category.
Pixsy is a visual search engine that pulls video and photos from sources like You Tube, Flickr, iStock and more. Clicking on a result will take you to its source page, which can make it easier to find images and video that are available for reuse.
Retrievr is another visual search engine, but with a twist – it allows you to upload an image or make a sketch, then retrieves matching images from Flickr.
This image search engine puts 3,000,000,000 pictures at your fingertips.