User agent string detection system was developed for ASAP Consulting, s.r.o. where I previously worked.
Was primarily designed for web statistics system Cluso. Due to the possibility of further use has been made available on this site.
System API is free. In case of high number analyzed request free API can be restricted by number of requsets per hour.
For manual aplication use online form. More interesting is access by our API. Communication with client is very simple (send UA string to our server and take back XML or plain text). Metodic description also includes examples with codes.
This tool is operated for free, but WITHOUT ANY GUARANTEE, including secondary guarantees MARKETBILITY or SUITABILITY FOR A DEFINITE INTENTION. This service can be anytime changed or stopped as well.