What's a good, free source control system for eclipse android development?

Question

My app code is starting to get unmanageable and I want to start source control, primarily because I need to branch my code.

What are some good systems that you have

Answer 1

If you are not working on a team and you just need version control for yourself, SourceGear Vault is free for a single user and they have a nice Eclipse plug-in.

I use it for Android development and it works like a charm.