If you're the type who loves beta testing software but didn't (or couldn't) jump through the hoops to be a part of Apple's developer program, fear not. The company has opened beta testing for OSX Mavericks to the public.
Apple puts it thusly:
The OS X Beta Seed Program gives users the opportunity to run pre-release software. Test-drive beta software and provide quality and usability feedback that will help make OS X even better.
Full story from the iMore Blog...