Steam account finder tool
Using this website you can convert the steam id and other steam account information to allow you to look up profiles and analyse a profiles history and find old friends. It is also widely used to help catch
Scammers and cheaters and provide functions via the SteamAPI that steam themselves do not display
SteamID is a large database driven website that spans several servers which helps track Friends lists, Games,Avatars ,Name history and more!
This site also provides tools and its own API!