Free
Communication · Social networks · Forums
Social Networking and Forum software. · Category descriptions are the source's original text
Flarum
Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again.
Answer
Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user...
Misskey
Decentralized app-like microblogging server/SNS for the Fediverse, using the ActivityPub protocol like GNU social and Mastodon.
PixelFed
Ethical photo sharing platform, powered by ActivityPub federation (alternative to Instagram).
remark42
Lightweight and simple comment engine, which doesn't spy on users. It can be embedded into blogs, articles or any other place where readers...
Isso
Lightweight commenting server written in Python and Javascript. It aims to be a drop-in replacement for Disqus.
Redlib
An alternative private front-end to Reddit, with its origins in Libreddit.
Misago
Fully featured modern forum application that is fast, scalable and responsive.
Loomio
Collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect them.
Artalk
Comment system built in Golang, providing a lightweight and highly customizable solution for adding comments to your website.
phpBB
Flat-forum bulletin board software solution that can be used to stay in touch with a group of people or can power your entire website.
Movim
Modern, federated social network based on XMPP, with a fully featured group-chat, subscriptions and microblogging.
Talkyard
Create a community, where your users can suggest ideas and get questions answered. And have friendly open-ended discussions and chat (Slack/...
OSSN
Social networking software that allows you to make a social networking website and helps your members build social relationships, with peopl...
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AI Auto-Trading
Automated trading where AI reviews every strategy and every decision is on record
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