Openfire - Openfire (formerly Wildfire) is a cross-platform instant messaging (IM) and groupchat server.
Blazor - An experimental web UI framework using C#/Razor and HTML, running in the browser via WebAssembly
Prosody - Prosody is a modern flexible communications server for Jabber/XMPP written in Lua.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Matrix.org - Matrix is an open standard for decentralized persistent communication over IP.
Flatfile - The new standard for data import