What is Alpha, Beta, Gamma, Delta? 
You should be aware of them during the development of software. No need to mention about the necessity of source code version controlling systems.
http://en.wikipedia.org/wiki/Software_release_life_cycle
For Developers, we also need to mention about SDK, DTK, DRK and WTF!
http://blogs.msdn.com/b/windowsmobile/archive/2009/06/04/sdk-dtk-drk-wtf.aspx
I hope you do not need any WTF 