LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
Observable - Interactive code examples/posts
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.
nbviewer.org - Rackspace server host Jupyter Notebooks from your github repo
MyChat - Secure instant messenger for any network
Jupyter - Project Jupyter exists to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages. Ready to get started? Try it in your browser Install the Notebook.