alternative的意思是选择性的，意思是除google等主流搜索引擎以外的，作补充的搜索引擎。
| Name | Link | Category |
| FindSounds | www.findsounds.com | Audio Search |
| Blogdigger | www.blogdigger.com | Blog Search |
| Gigablast | www.gigablast.com | Blog Search |
| IceRocket | www.icerocket.com | Blog Search |
| sphere | www.sphere.com | Blog Search |
| bookmach.com | www.bookmach.com | Bookmark Search |
| Clusty | www.clusty.com | Clustering Search |
| gnod | www.gnod.net | Clustering Search |
| iBoogie | www.iboogie.com | Clustering Search |
| KartOO | www.kartoo.com | Clustering Search |
| mnemomap | www.mnemo.org | Clustering Search |
| Mooter | www.mooter.com | Clustering Search |
| mrquery | www.mrquery.com | Clustering Search |
| qksearch | www.qksearch.com | Clustering Search |
| Quintura | www.quintura.com | Clustering Search |
| Webbrain | www.webbrain.com | Clustering Search |
| WiseNut | www.wisenut.com | Clustering Search |
| Quintura for Kids | http://kids.quintura.com/ | Clustering Search Kids |
| KoolTorch | www.kooltorch.com | Clustering Search Visualization |
| AllTha.at | www.allth.at | Continuous Search |
| searchbots | www.searchbots.net | Continuous Search |
| SWAMII | www.swamii.com | Continuous Search |
| Mojeek | www.mojeek.com | Custom Search Engines (CSE) |
| decipho | www.decipho.com | Filtered Search |
| factbites | www.factbites.com | Filtered Search |
| fisssh! | www.fisssh.com | Filtered Search |
| Hyper Search | http://hypersearch.webhop.org .90.seekdotnet.com | Filtered Search |
| ChaCha | www.chacha.com | Guided Search |
| 1-800-KNOW-NOW | www.1800knownow.com | Guided Search Mobile |
| Yahoo! Mindset | www.mindset.research.yahoo.com | Intention Driven Search |
| Local.com | www.local.com | Local Search |
| SearchTheWeb2 | www.searchtheweb2.com | Long Tail Search |
| hakia | www.hakia.com | Meaning Based Search |
| SurfWax | www.surfwax.com | Meaning Based Search |
| Find Forward | www.findforward.com | Meta Feature Search |
| FyberSearch | www.fybersearch.com | Meta Feature Search |
| GoLexa | www.golexa.com | Meta Feature Search |
| crossEngine | www.crossengine.com | Meta Meta Search |
| goshme | www.goshme.com | Meta Meta Search |
| AGENT 55 | www.agent55.com | Meta Search |
| Dogpile | www.dogpile.com | Meta Search |
| gnosh | www.gnosh.org | Meta Search |
| GoYams | www.goyams.com | Meta Search |
| grokker | www.grokker.com | Meta Search |
| ixquick | www.ixquick.com | Meta Search |
| mamma | www.mamma.com | Meta Search |
| PlanetSearch | www.planetsearch.com | Meta Search |
| PolyMeta | www.polymeta.com | Meta Search |
| SRCHR | www.srchr.com | Meta Search |
| turboscout | www.turboscout.com | Meta Search |
| whonu? | www.whonu.com | Meta Search |
| zapmeta | www.zapmeta.com | Meta Search |
| sidekiq | www.sidekiq.com | Meta Vertical Search |
| Ask Mobile | www.m.ask.com | Mobile Search |
| Yahoo! oneSearch | http://us.m.yahoo.com | Mobile Search |
| Netvibes2Go | http://m.netvibes.com | Mobile Search | Netvibes |
| Slifter | www.slifter.com | Mobile Search Shopping |
| Boing | www.boing.mobi | Mobile Web Search |
| Lexxe | www.lexxe.com | Natural Language Processing (NLP) |
| Blabline | www.blabline.com | Podcast Search |
| PodZinger | www.podzinger.com | Podcast Search |
| Congoo | www.congoo.com | Premium Content |
| Gruuve | www.gruuve.com | Recommendation Search |
| Deepy | www.deepy.com | Rich Internet Application (RIA) |
| WASALive! | http://en.wasalive.com | RSS Search |
| Yandex | wwww.yandex.ru | Russian Search Engine |
| Trexy | www.trexy.com | Search Trails |
| CogHog | www.infactsolutions.com /projects/coghog/demo.htm | Semantic Search |
| AnswerBus | www.answerbus.com | Semantic Search | Natural Language Processing (NLP) |
| Swoogle | http://swoogle.umbc.edu | Semantic Web Search |
| filangy | www.filangy.com | Social Search |
| Omgili | www.omgili.com | Social Search |
| Sproose | www.sproose.com | Social Search |
| url.com | www.url.com | Social Search |
| collarity | www.collarity.com | Social Search | Collarity Compass |
| Spy Fu | www.spyfu.com | Spy Search! |
| Twerq | www.twerq.com | Tabbed Results |
| Zuula | www.zuula.com | Tabbed Search |
| dumbfind | www.dumbfind.com | Two Box Search |
| Ujiko | www.ujiko.com | User-Rated | Votes |
| yoono | www.yoono.com | User-Rated | Votes |
| pipl | http://pipl.com | Vertical Search People |
| ZabaSearch | www.zabasearch.com | Vertical Search People |
| TheFind.com | www.thefind.com | Vertical Search Shopping |
| blinkx | www.blinkx.com | Video Search |
| ClipBlast! | www.clipblast.com | Video Search |
| PureVideo | www.purevideo.com | Video Search |
| girafa | www.girafa.com | Visual Display |
| Pagebull | www.pagebull.com | Visual Display |
| RedZee | www.redzee.com | Visual Display |
| Slideshow | http://slideshow.zmpgroup.com/ | Visual Display |
| Ditto | www.ditto.com | Visual Search |
| exalead | www.exalead.com/search | Visual Search |
| like | www.like.com | Visual Search |
| retrievr | http://labs.systemone.at /retrievr/ | Visual Search |
| Ask Vox | www.askvox.com | Vocal Search |
| AbbyMe | www.abbyme.com | Vocal Search Mobile |
| Ms. Dewey | www.msdewey.com | Vocal Search Unique Interface (UI) |
| Web 2.0 | www.web20searchengine.com | Web 2.0 Search |
| Wikio | www.wikio.com | Web 2.0 Search |
除了这个表格外，作者还准备了一个Excel版的文件：Excel format
更详细的介绍见原文：Top 100 Alternative Search Engines
