remark42

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.

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

ActivityPub federated social network server implementing the Mastodon client API.

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.