I'm wondering if there are any pieces of software that keep copies of revisions made on a document. So say I delete 500 words out of a document and save it. Is there a program that would realize I have changed the document and would back up the old version of the document in something like a zipped folder?
I currently use Dropbox so that I have all my writing no matter where I go but it would be nice to have a program that tracks the progress I've made. As a programmer I'm aware of Github but was wondering if there was a more elegant solution. I apologize to the mods if this is too broad a question, though I think it is specific enough.