The WhatIsMyBrowser.com User Agent Parser started being built in 2010 along with the website.
In August 2014 we launched the API to provide external access to the parser.
View a detailed version history.
The main aspect is user agent parsing; including whether or not the agent software is up to date.
We also let you access the parser in a "batch" mode. You can also get the latest version numbers of web browsers and plugins via the API.
How do we develop the User Agent Parser?