CloudLock for Google (GOOG) Apps is a data protection app that tracks the lifecycle of Google Docs. CloudLock protects the documents — and helps meet compliance regulations — by monitoring how they are accessed, edited and shared and by who and lets IT admins revoke sharing rights if necessary.
CloudLock also allows IT admins to transfer ownership of Google Docs to a different account on a company domain (for when an employee leaves the company) and has a data analytics feature to inventory documents and monitor capacity usage.
Pricing: Free for up to 10 users. After that it starts at $4 per user, per year.
[Also see: Review: Office 365 vs. Google Apps]