GoToSocial

Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.

Lightweight and simple comment engine, which doesn't spy on users. It can be embedded into blogs, articles or any other place where readers add comments.

Comment system built in Golang, providing a lightweight and highly customizable solution for adding comments to your website.

Decentralized app-like microblogging server/SNS for the Fediverse, using the ActivityPub protocol like GNU social and Mastodon.

Advanced forum / community solution based on Ruby and JS.

Forum software built for the modern web.