So you like acts_as_versioned but you can’t stand the way it stores versions with one more table per model (oh and you want to add columns later to your model ? puhleaaaaaase: don’t). Meet Matt Mower’s Simply Versioned. Good. Now you got millions of database entries with only a few altered ? You can’t version everything ! And what about only versioning entries which have really been changed, not just saved ? Then meet my fork (for Rails >2.1 only).