BigAnt Messenger Free is specially designed for secure and efficient office communication. Key features: 1. Send instant message and offline message. 2. Exchange file or folder. 3.Group message. 4.Voice and video chat. 5.Remote desktop control. 6. Customize logo. 7. Broadcast message. 8. Roles and permissions. 9. Integrate with Windows Active Directory. 10. User friendly. 11. Automatically upgrade.