A collection of tools and resources for software developers & systems administrators to use, provided by whatismybrowser.com.
A user-facing website that gives your visitors all the info about their browser, OS, and device. Useful when troubleshooting their problems.
The same detection software that powers the website is available via API - use it however you need in your own projects.
An enormous, categorised list of user agents, as well as a form to parse user agents to see what they mean.