NodeBB Forum Software is powered by Node.js and built on either a Redis or MongoDB database. It utilizes web sockets for instant interactions and real-time notifications. NodeBB has many modern features out of the box such as social network integration and streaming discussions, while still making sure to be compatible with older browsers.

Discourse is the 100% open source discussion platform built for the next decade of the Internet. Use it as a:

mailing list
discussion forum
long-form chat room

To learn more about the philosophy and goals of the project, visit discourse.org.