Secure instant messaging system for team collaboration
Send Anywhere - Send whatever you want, wherever you want
LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
AirDroid - Access Android phone/tablet from computer remotely and securely. Manage SMS, files, photos and videos, WhatsApp, Line, WeChat and more on computer.
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.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Bopup IM Suite - Organize secure messaging system and communicate instantly via self-hosted IM server.