Visit user-agents.org for a searchable database of user-agents as used by browsers, search-engines spiders and crawlers, web-directories, download managers, link checkers, proxy servers, web filtering tools, harvesters, spambots & badbots. Sorted by user-agents names with informations about their type, purpose and origin. Abbreviations of types: B = (Client) browser C = Link-, bookmark-, server- checking D = Downloading tool P = Proxy server, web filtering R = Robot, crawler, spider S = Spam or bad bot