Found an awesome list of alternative and useful search engine sites and I just had to share it with you guys, its a lot of fun!

Written by Charles S. Knight, SEO and edited by Richard MacManus. The original version of the Top 100 Alternative Search Engines List appeared here on Read/WriteWeb on January 29, 2007. Every month, we'll be updating the list and selecting a "Search Engine of the Month". At the end of the year, we'll also select an Alternative Search Engine of the Year.

  1. AllTha.at is The search engine that keeps on looking

  2. Ask Mobile is a Mobile search engine from Ask.com

  3. ASK VOX is a A second talking female user interface.

  4. AnswerBus is a Ask in English, French, Spanish, German or Italian.

  5. Blabline is a Podcast / videocast search engine

  6. blinkx is a Video Search

  7. boing is a Search the Mobile web

  8. bookmach.com is a Searches for posts related to your keywords.

  9. ChaCha is a Human Guides are available to aid in your search.

  10. ClipBlast! is a Video Search

  11. Clusty is a Clustering search engine

  12. collarity is a Behavioral personalized search / Collarity Compass

  13. CONGOO is a Searches for Premium Content

  14. crossEngine is a Searches Search Engines; formerly mrSAPO

  1. d e c i p h o is a Behavioral personalized search / Social Meter

  2. Ditto is a Visual search engine

  3. Dogpile is a MetaSearch Engine

  4. dumbfind is a Featuring the Two-Box search method.

  5. exalead is a Web / Image search with a European flavor

  6. factbites is a Search Result snippets are complete sentences.

  7. fazzle is a Search engine that emphasizes Boolean Search

  8. filangy is a Personalized Search Engine

  9. FIND FORWARD is a Multi-featured search engine; check this one out!

  10. FindSounds is a Search for sound effects and musical samples.

  11. FyberSearch is a Parent site for some interesting new search engines.

  12. GIGABLAST is a A multi-featured search engine.

  13. girafa is a Visual search engine - results are thumbnails

  14. gnod is a Oustanding recommendation search engines

  15. gnosh is a Metasearch engine

  16. GoLexa is a COMPLETE page analysis for each result.

  17. goshme Beta 3.0 is a A search engine for search engines. Top 10 pick.

  18. GoYams is a Metasearch engine where you select the mix.

  19. grokker is a A multi-featured meta-search engine.

  20. GRUUVE is a Groovy music recommendation search engine.

  21. hakia is a "Meaning based" search engine

  22. ICEROCKET is a Blog search engine

  23. ixquick is a Metasearch engine

  24. KartOO is a Visually appealling clustering search engine

  25. Lexxe is a Natural language processing (NLP) search engine

  26. like is a Visual shopping engine; see also riya

  27. liveplasma is a Attractive music / movies clustering / recommendation engine

  28. Local.com is a Search for local businesses, products, and services

  29. lurpo is a Searches for custom Google search engines

  1. mamma is a metasearch engine

  2. MetaGlossary is a Searches for definitions, phrases and acronyms.

  3. mnemomap is a Clustering search engine

  4. Mojeek is a Customize your own personal search engine.

  5. Mooter is a Clustering search engine

  6. mrquery is a Metasearch engine / metasearch providers

  7. MS. DEWEY is a Unique user interface - enough said.

  8. Omgili is a Social community search engine

  9. onkosh is a Arabic / English Search Engine

  10. Pagebull is a Visual results search engine

  11. pipl is a People search engine

  12. PlanetSearch is a Metasearch engine

  13. PolyMeta is a Metasearch and clustering search engine

  14. pronto.com is a Metasearch engine

  15. qksearch is a Multi-featured "3-in-1" multi-search engine

  16. Quintura is a Clustering search engine with a new interface

  17. Quintura for kids is a Search engine for kids by Quintura

  18. RedZee is a Search Engine with nice preview results

  19. retrievr is a Visual search engine

  20. riya is a Visual search engine; see also Like

  21. scirus is a Scientific information only search engine

  22. searchbots is a Have a little fun, create your own searchbot.

  23. SearchTheWeb2 is a Search The Popular Head and The Long Tail

  24. sidekiq is a Multi-category search engine. Very nice.

  25. Slideshow is a Displays search results as a moving slideshow.

  26. Slifter is a A mobile shopping search engine.

  27. soople is a A simplified version of Google's search options.

  28. Speegle is a The speeglebot talks to you.

  29. Sphere is a A blog search engine.

  30. Sproose is a Social search engine

  31. S R C H R is a Metasearch engine

  32. SurfWax is a Meaning-based search engine

  33. Swamii is a Search engine that keeps on searching for you.

  34. Swoogle is a Semantic Web search engine

  35. thefind.com is a Shopping search engine

  36. Trexy is a Follow "trails" and "trailblazers" with Trexy.

  37. turboscout is a Metasearch engine

  38. TWERQ is a Multi-category search engine with tabbed results.

  39. UJIKO is a A fun interface where you can vote on the results.

  40. url.com is a "Search with many" community metasearch engine.

  41. VMGO.com is a Vote on the search results with emoticons.

  42. WASALive is a A new member of the list.

  43. Web 2.0 is a Web 2.0 search engines

  44. WEBBRAIN is a Clustering "see the web" search engine.

  45. whonu? is a Deluxe metasearch engine.

  46. WIKIO is a "Live information from 33981 media and blogs"

  47. Windows Live Mobile is a Windows Live Mobile search engine

  48. WiseNut is a Clustering search engine

  49. Yahoo! Mobile is a Yahoo! Mobile search engine

  50. Yahoo! MINDSET is a Intention-driven search; commercial versus research

  51. yoono is a People-rated community web search

  52. yoople is a Yoople! = Yahoo! + Google + People

  53. yubnub is a Use command lines to search the web.

  54. ZABASEARCH is a People and Public Information Search Engine.

  55. zapmeta is a Metasearch engine

  56. Zippy is a Search engine for webmasters

  57. ZUULA is a Multi-category, multi-search engine, with good tabs.

Full Original: Top 100 Alternative Search Engines, February 2007