MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
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.
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.
Bopup IM Suite - Organize secure messaging system and communicate instantly via self-hosted IM server.