"If you’re new to this project, VersionPress basically brings the power of Git version control system to WordPress. It versions both files and the database, enabling things like site-wide reverts, easy staging, team workflows, efficient backups and more. Importantly, VersionPress is not just for developers – we strive for simplicity so most actions are tracked automatically and for non-technical users, VersionPress is simply a table with undo-able history"

(via @Korben)