Is there a milestones manager application for Mac?

So here’s the deal i want an application that backs up and makes copies of files on a specific folder (in my case it’s my folder for web design/dev stuff). I need something that makes backups of this folder and allows me to revert the changes.

I know Time Machine does this but i want the back up on my local machine so that i can use it while on the go (and also i only need to packup usually one folder). SVN does it too but need something for offline use (since i tend to get a lot of work done during my commute). CSS Edit has a nice milestone manager too but it only does it for the css (not the html, psd or image files).