Secure instant messaging system for team collaboration
HideMyFaceTime - Stop watching your own face during FaceTime calls.
LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
ShareAccount - Share your account without giving out your password
Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.
WING - A phone carrier that is actually nice to you.
Bopup IM Suite - Organize secure messaging system and communicate instantly via self-hosted IM server.