| String | Description | Type | Info |
| !Susie (http://www.sync2it.com/susie) | Sync2It bookmark management & clustering engine | C R | Info |
| <a href='http://www.unchaos.com/'> UnChaos </a> From Chaos To Order Hybrid Web Search Engine.(vadim_gonchar@unchaos.com) | UnCHAOS search robot | R | Info |
| <a href='http://www.unchaos.com/'> UnChaos Bot Hybrid Web Search Engine. </a> (vadim_gonchar@unchaos.com) | UnCHAOS search robot | R | Info |
| <b> UnChaosBot From Chaos To Order UnChaos Hybrid Web Search Engine at www.unchaos.com </b> (info@unchaos.com) | UnCHAOS search robot | R | Info |
| <http://www.sygol.com/> http://www.sygol.com | Sygol Search (Italy) robot | R | Info |
| ( Robots.txt Validator http://www.searchengineworld.com/cgi-bin/robotcheck.cgi ) | SearchEngineWorld's robots.txt validator | C | Info |
| (DreamPassport/3.0; isao/MyDiGiRabi) | DreamCast DreamPassport browser | B | Info |
| (Privoxy/1.0) | Privoxy web proxy | P | Info |
| */Nutch-0.9-dev | Unknown Yahoo robot | R | Info |
| +SitiDi.net/SitiDiBot/1.0 (+Have Good Day) | SitiDi.net search (Germany) robot | R | Info |
| -DIE-KRAEHE- META-SEARCH-ENGINE/1.1 http://www.die-kraehe.de | Die Kraehe Meta-Search-Engine (Germany) link checking | R | Info |
| 123spider-Bot (Version: 1.02, powered by www.123spider.de | 123spider.de (Germany) web directory link checking | C | Info |
| 192.comAgent | 192.com - UK web directory | R | Info |
| 1st ZipCommander (Net) - http://www.zipcommander.com/ | 1st ZipCommander Net - IE based browser | B | Info |
| 2Bone_LinkChecker/1.0 libwww-perl/5.64 | 2Bone online link checker | C | Info |
| 4anything.com LinkChecker v2.0 | 4Anything robot | R | Info |
| 8484 Boston Project v 1.0 | Unknown guestbook spamming or harvesting tool from diff. IPs | S | Info |
| :robot/1.0 (linux) ( admin e-mail: undefined http://www.neofonie.de/loesungen/search/robot.html ) | neofonie search robot Germany | R | Info |
| A-Online Search | A-Online.at robot - now Jet2Web Search | R | Info |
| A1 Keyword Research/1.0.2 (+http://www.micro-sys.dk/products/keyword-research/) miggibot/2007.03.27 | A1 Keyword Research - search engine and keyword optimization software | C | Info |
| A1 Sitemap Generator/1.0 (+http://www.micro-sys.dk/products/sitemap-generator/) miggibot/2006.01.24 | MiggiBot website crawler engine - A1 Sitemap Generator | R | Info |
| aardvark-crawler | Aardvark web crawler for Sun's Blog recommendations | R | Info |
| AbachoBOT | Abacho / Crawler.de robot | R | Info |
| AbachoBOT (Mozilla compatible) | Abacho / Crawler.de robot | R | Info |
| ABCdatos BotLink/5.xx.xxx#BBL | ABCdatos - Castilian program & tutorial directory | R | Info |
| Aberja Checkomat | Aberja Hybridsuchmaschine (Germany) link checking | R | Info |
| abot/0.1 (abot; http://www.abot.com; abot@abot.com) | Nameprotect copyright search robot (24.177.134.x) | R | Info |
| About/0.1libwww-perl/5.47 | About robot | R | Info |
| Accelatech RSSCrawler/0.4 | Accela Technology RSS feed crawler | R | Info |
| accoona | Accoona Search robot | R | Info |
| Accoona-AI-Agent/1.1.1 (crawler at accoona dot com) | Accoona Search robot | R | Info |
| Accoona-AI-Agent/1.1.2 (aicrawler at accoonabot dot com) | Accoona Search robot | R | Info |
| Ace Explorer | Ace Explorer - IE based browser | B | Info |
| Ack (http://www.ackerm.com/) | Ackerm search robot | R | Info |
| AcoiRobot | Acoi picture finder robot | R | Info |
| Acoon Robot v1.50.001 | Acoon.de search (Germany) robot | R | Info |
| Acoon Robot v1.52 (http://www.acoon.de) | Acoon.de search (Germany) robot | R | Info |
| Acoon-Robot 4.0.x.[xx] (http://www.acoon.de) | Acoon.de search (Germany) robot | R | Info |
| Acoon-Robot v3.xx (http://www.acoon.de and http://www.acoon.com) | Acoon.de search (Germany) robot | R | Info |
| Acorn/Nutch-0.9 (Non-Profit Search Engine; acorn.isara.org; acorn at isara dot org) | Acorn Search Project | R | Info |
| ActiveBookmark 1.x | LibMaster.com Active Bookmark HTML page creator | C B | Info |
| Activeworlds | Activeworlds 3D homepage browser | B | Info |
| ActiveWorlds/3.xx (xxx) | Activeworlds 3D homepage browser | B | Info |
| Ad Muncher v4.xx.x | Ad Muncher - banner killer | P | Info |
| Ad Muncher v4x Build xxxxx | Ad Muncher - banner killer | P | Info |
| Adaxas Spider (http://www.adaxas.net/) | website directory adaxas link checking | C | Info |
| Advanced Browser (http://www.avantbrowser.com) | Avant Browser - IE based browser | B | Info |
| AESOP_com_SpiderMan | Aesop robot | R | Info |
| agadine/1.x.x (+http://www.agada.de) | Agada search (Germany) robot | R | Info |
| Agent-SharewarePlazaFileCheckBot/2.0+(+http://www.SharewarePlaza.com) | SharewarePlaza link checking | R | Info |
| AgentName/0.1 libwww-perl/5.48 | Linkomatic submission verifier | R | Info |
| AIBOT/2.1 By +(www.21seek.com A Real artificial intelligence search engine China) | 21seek.com (China) robot (218.17.90.xxx) | R | Info |
| AideRSS/1.0 (aiderss.com) | AideRss - Postrank RSS and Blog filtering | C | Info |
| aipbot/1.0 (aipbot; http://www.aipbot.com; aipbot@aipbot.com) | Nameprotect copyright search robot (24.177.134.x) | R | Info |
| aipbot/2-beta (aipbot dev; http://aipbot.com; aipbot@aipbot.com) | Nameprotect copyright search robot (24.177.134.x) | R | Info |
| Akregator/1.2.9; librss/remnants | Akregator news feed reader for KDE | B | Info |
| Aladin/3.324 | Aladin robot | R | Info |
| Alcatel-BG3/1.0 UP.Browser/5.0.3.1.2 | Phone.com UP.Browser for mobiles on Alcatel cellphone | B | Info |
| Aleksika Spider/1.0 (+http://www.aleksika.com/) | Aleksika Danmark - Search engine optimization spider | R | Info |
| AlertInfo 2.0 (Powered by Newsbrain) | Alertinfo - French version of Feedreader 3.xx | B | Info |
| AlkalineBOT/1.3 | Vestris robot | R | Info |
| AlkalineBOT/1.4 (1.4.0326.0 RTM) | Vestris robot | R | Info |
| Allesklar/0.1 libwww-perl/5.46 | Allesklar.de robot | R | Info |
| Alligator 1.31 (www.nearsoftware.com) | Alligator download manager | D | Info |
| Allrati/1.1 (+) | Unknown robot from Allrati.com | R | Info |
| AltaVista Intranet V2.0 AVS EVAL search@freeit.com | Altavista robot | R | Info |
| AltaVista Intranet V2.0 Compaq Altavista Eval sveand@altavista.net | Altavista robot | R | Info |
| AltaVista Intranet V2.0 evreka.com crawler@evreka.com | Altavista robot | R | Info |
| AltaVista V2.0B crawler@evreka.com | Altavista robot | R | Info |
| amaya/x.xx libwww/x.x.x | Amaya - W3C's Editor/Browser | B | Info |
| AmfibiBOT | Amfibi Search robot | R | Info |
| Amfibibot/0.06 (Amfibi Web Search; http://www.amfibi.com; agent@amfibi.com) | Amfibi Search robot | R | Info |
| Amfibibot/0.07 (Amfibi Robot; http://www.amfibi.com; agent@amfibi.com) | Amfibi Search robot | R | Info |
| amibot | amibot - Amidalla search engine robot (62.241.33.xx) | R | Info |
| Amiga-AWeb/3.4.167SE | AWeb Amiga browser | B | Info |
| AmigaVoyager/3.4.4 (MorphOS/PPC native) | Voyager - Amiga browser | B | Info |
| AmiTCP Miami (AmigaOS 2.04) | Amiga Miami TCP Stack | | Info |
| Amoi 8512/R21.0 NF-Browser/3.3 | NF embedded browser on Amois Skypephone | B | Info |
| amzn_assoc | Amazon.com robot for checking their affiliate sites | C | Info |
| AnnoMille spider 0.1 alpha - http://www.annomille.it | Annomille Italian historical oriented robot | R | Info |
| annotate_google; http://ponderer.org/download/annotate_google.user.js | annotate Google - Firefox extension for annotating Google search results | B | Info |
| Anonymized by ProxyOS: http://www.megaproxy.com | Megaproxy user | P | Info |
| Anonymizer/1.1 | faked user agent | | Info |
| AnswerBus (http://www.answerbus.com/) | AnswerBus natural language search using COLLATE technology | R | Info |
| AnswerChase PROve x.0 | AnswerChase search tool | | Info |
| AnswerChase x.0 | AnswerChase search tool | | Info |
| ANTFresco/x.xx | ANT Fresco Browser | B | Info |
| antibot-V1.1.5/i586-linux-2.2 | Antibot (discontinued) robot | R | Info |
| AnzwersCrawl/2.0 (anzwerscrawl@anzwers.com.au;Engine) | Anzwers (Yahoo) Australia robot | R | Info |
| Apexoo Spider 1.x | Apexoo Search spider | R | Info |
| Aplix HTTP/1.0.1 | JavaOS app. for SEGA Saturn Internet and Sanyo Internet-TV | B | Info |
| Aplix_SANYO_browser/1.x (Japanese) | JavaOS app. for Sanyo Internet-TV | B | Info |
| Aplix_SEGASATURN_browser/1.x (Japanese) | JavaOS app. for SEGA Saturn Internet | B | Info |
| Aport | Aport robot | R | Info |
| appie 1.1 (www.walhello.com) | Walhello Internet Search robot | R | Info |
| Apple iPhone v1.1.4 CoreMedia v1.0.0.4A102 | CoreMedia player on Apple iPhone | B | Info |
| Apple-PubSub/65.1.1 | PubSub - Mac OS X utility for managing RSS/Atom subscriptions via the PubSub framework | B | Info |
| ArabyBot (compatible; Mozilla/5.0; GoogleBot; FAST Crawler 6.4; http://www.araby.com;) | Araby search - Arabia | R | Info |
| ArachBot | Covac Arachnid Web Crawler | R | Info |
| Arachnoidea (arachnoidea@euroseek.com) | Euroseek spider | R | Info |
| aranhabot | Amazon.com robot for checking their affiliate sites | C | Info |
| ArchitextSpider | Excite spider | R | Info |
| archive.org_bot | Heritrix - The Internet Archive's open-source crawler (207.241.225.2xx) | R | Info |
| Argus/1.1 (Nutch; http://www.simpy.com/bot.html; feedback at simpy dot com) | Simpy Bookmarklet crawler (69.55.233.xx) | C | Info |
| Arikus_Spider | Arikus inContext search engine software | R | Info |
| Arquivo-web-crawler (compatible; heritrix/1.12.1 +http://arquivo-web.fccn.pt) | Tomba project: the Portuguese web archive | R | Info |
| ASAHA Search Engine Turkey V.001 (http://www.asaha.com/) | Asaha search robot (Turkey) | R | Info |
| Asahina-Antenna/1.x | ASAHINA Antenna information detecting agent | R | Info |
| Asahina-Antenna/1.x (libhina.pl/x.x ; libtime.pl/x.x) | ASAHINA Antenna information detecting agent | R | Info |
| ask.24x.info | Ask 24x Info robot | R | Info |
| AskAboutOil/0.06-rcp (Nutch; http://www.nutch.org/docs/en/bot.html; nutch-agent@askaboutoil.com) | Ask About Oil - Petroleum related search (24.227.212.xxx) using Nutch | R | Info |
| asked/Nutch-0.8 (web crawler; http://asked.jp; epicurus at gmail dot com) | askEd! / Inferret search (Japan) robot using Nutch | R | Info |
| ASPSeek/1.2.5 | ASPSeek search engine software -Yahoo-Inc. / Telecom Canada robot | R | Info |
| ASPseek/1.2.9d | Swsoft.net robot using Aspseek | R | Info |
| ASPSeek/1.2.x | ASPSeek search engine software | R | Info |
| ASPSeek/1.2.xa | ASPSeek search engine software | R | Info |
| ASPseek/1.2.xx | ASPSeek search engine software | R | Info |
| ASPSeek/1.2.xxpre | ASPSeek search engine software | R | Info |
| ASSORT/0.10 | Associative Sort robot | R | Info |
| asterias/2.0 | Singingfish media spider (64.12.186.2xx) via AOL search | R | Info |
| AtlocalBot/1.1 +(http://www.atlocal.com/local-web-site-owner.html) | Atlocal local business search robot | R | Info |
| Atomic_Email_Hunter/4.0 | Atomic Email Hunter email extracing and harvesting | S | Info |
| Atomz/1.0 | Atomz robot | R | Info |
| atSpider/1.0 | atSpider (ceased) email harvester / spambot | S | Info |