http://www.locklizard.com
2. Digimarc
http://www.digimarc.com
3. ContentGuard
http://www.contentguard.com
4. Reconnex
http://www.reconnex.net
5. InterTrust
http://www.intertrust.com
6. Workshare
http://www.workshare.com
7. cloakware
http://www.cloakware.com
8. Legio Media
http://www.legiomedia.com
9. EZDRM
http://www.ezdrm.com
10. vidlock
http://www.vidlock.com