Prot-On 1.6

Prot-on gives you the ability to protect and track the use of any copy of your documents. Protect your files.

All copies of the document will be protected with strong encryption regardless of where they are stored. Prot-On does not store files, just the encryption keys and permissions. Control access. Every time users try to open the protected document Prot-On will check if they are authorized to do so and what type of access they have. Track document use. At any time you can check the activity log to see who has been accessing any copy of your document, and change permissions remotely even after the file have been distributed.
Prot-On is free for personal use. The cost for professionals is $51.50 per year (40