EasySVN

EasySVN is a free Subversion client that supports all the standard Subversion operations found in other clients plus unique optional features like "automatic update and commit" that makes file sharing and and team collaboration easy.

Once automatic update and commit is enabled for a local folder, the app runs seamlessly in the background. You can open, edit, add, delete, and drag and drop files just like you normally would. Also you can create additional folders inside the enabled one. Whatever you do is replicated in the central repository, and any changes made by others will reflect on your computer.