Source (link to git-repo or to original if based on someone elses unmodified work): https://sourceforge.net/projects/output-messenger/
Output Messenger is an inter-office, safe & secure communication tool which offers you a variety of environment such as private chat, group chat , chat Rooms and announcement/ broad cast messages. Every messages in your network were secured by SSL/TLS. It was developed to suit any networks as LAN, WAN, VPN etc.. and provide only authenticate access. You can use it anywhere on any device. Output Messenger is badged with variety of features like File Transfer, desktop sharing, voice and video calls etc.