Community &amp; Social

Self-hostable federated microblogging server for the ActivityPub network, with timelines, media attachments, moderation tools, and rich web/mobile clients.

X (formerly Twitter)+1

Discourse

Modern, searchable discussion forums for communities

46k

8.8k

Open source forum software with real-time discussions, powerful moderation, SSO, and integrations—built for long-lived, searchable community knowledge.

Zendesk+5

Plane

Open-source project and product management platform

42.9k

3.2k

Self-hostable project management tool for issues, sprints, roadmaps, and product planning with a modern UI and API.

Jira+5

Wiki.js

Modern, extensible wiki and documentation platform

27.6k

3.1k

A Node.js-based wiki for team documentation and knowledge bases with Markdown, rich editor, permissions, Git sync, and multiple authentication options.

Confluence+7

Docmost

Collaborative wiki for team documentation and knowledge bases

18.5k

1.1k

Last commit: 26d ago

Self-hosted collaborative wiki and knowledge base with pages, spaces, permissions, and full-text search for internal documentation.

Confluence+5

Flarum

Modern, lightweight forum software for building communities

16.1k

1.7k

Last commit: 18d ago

Self-hosted, extensible forum platform with a modern UI, rich text editor, notifications, and a robust extension system.

Discord+4

NodeBB

Modern forum software built for real-time discussions

14.9k

2.9k

Real-time Node.js forum platform with plugins, themes, SSO, moderation tools, and integrations for building scalable community discussion boards.

Discord+5

PeerTube

Federated video hosting powered by WebTorrent and ActivityPub

14.4k

1.7k

Last commit: 7d ago

PeerTube is a self-hosted, federated video platform using ActivityPub and BitTorrent/WebTorrent to publish, stream, and share videos across interconnected instances.

YouTube+9

Lemmy

A federated link aggregator and discussion platform

14.2k

935

Self-hosted, ActivityPub-based forum platform for communities, link posts, and threaded discussions with federation across the Fediverse.

Reddit+4

Habitica

Gamified habit and task tracker with RPG mechanics

13.6k

4.4k

Habitica turns your habits, dailies, and to-dos into an RPG with rewards, streaks, parties, and challenges to help you stay consistent.

Todoist+3

Formbricks

Open-source surveys and product feedback for web apps

11.7k

2.1k

Self-hosted surveys and feedback forms for web apps with targeting, links, webhooks, and analytics to collect product and customer insights.

Typeform+7

Stalwart Mail Server

All-in-one secure mail server with modern spam filtering

11.1k

598

Stalwart is an all-in-one mail server (SMTP/IMAP/JMAP) with built-in anti-spam/DMARC, web admin UI, and flexible routing for running your own email infrastructure.

Microsoft Exchange Online+9

Misskey

Federated microblogging platform with rich social features

10.9k

1.5k

Self-hosted ActivityPub social network server with customizable UI, reactions, drive storage, powerful moderation, and federation with Mastodon and other Fediverse apps.

X (formerly Twitter)+4

Owncast

Self-hosted live streaming server with built-in chat

10.8k

1.2k

Owncast is a self-hosted live streaming server for broadcasting RTMP to a web player with built-in chat, moderation tools, embeddable stream pages, and theming.

Twitch (for live streaming)+5

Leantime

Open-source project management for Lean and Agile teams

8.8k

869

Last commit: 5d ago

Self-hosted project management system with roadmaps, kanban, tasks, time tracking, and client collaboration designed around Lean/Agile workflows.

Jira+7

HeyForm

Open-source form builder for surveys and data collection

8.5k

657

Last commit: 1mo ago

Self-hostable, Typeform-style form builder with logic, themes, integrations, and embeddable forms for surveys, feedback, and lead capture.

Typeform+4

Pixelfed

A federated, privacy-focused photo sharing platform

6.8k

816

Last commit: 1mo ago

Self-hostable photo sharing network built on ActivityPub, offering Instagram-like publishing, federation with the Fediverse, and moderation/admin controls.

Instagram+3

HumHub

Modular social network and intranet platform for teams

6.6k

1.7k

Last commit: 29d ago

Self-hosted social networking and intranet software with spaces, activity streams, user profiles, and a module marketplace for collaboration.

Microsoft Teams+6

Zammad

Open-source helpdesk and customer support ticketing system

5.3k

918

Self-hosted helpdesk for email and multichannel ticketing with SLA, automation, knowledge base, and integrations for support teams.

Zendesk+7

WriteFreely

A minimalist, federated blogging platform

365

Last commit: 4d ago

Self-hosted, privacy-focused publishing platform for blogs and multi-user instances, with a distraction-free editor, optional federation, and theming.

Medium+3

Fider

Collect and prioritize product feedback with voting

747

Self-hosted customer feedback portal to collect ideas, let users vote, and manage feature requests with statuses and notifications.

Canny+4

LimeSurvey

Open-source survey platform for advanced questionnaires

3.5k

1.1k

Self-hosted survey software for building questionnaires with branching logic, multilingual support, quotas, and exportable results for research and feedback.

SurveyMonkey+5

Hi.Events

Open-source event ticketing and registration platform

3.4k

543

Last commit: 9d ago

Self-hosted event management for ticket sales, registration, check-in, and attendee communications with organizer/admin tools and payment integrations.

Eventbrite+6

Synapse

Matrix homeserver for decentralized, federated messaging

3.3k

435

A Matrix homeserver that powers federated real-time chat with accounts, rooms, APIs, and integrations for clients like Element.

Slack+4

Converse

Embeddable XMPP web chat client for websites and platforms

3.2k

801

Converse is an open-source, browser-based XMPP/Jabber chat client you can embed in any site to provide 1:1 and group messaging over existing XMPP servers.

Slack+6

Redlib

Privacy-focused web front-end for Reddit

204

Last commit: 25d ago

Redlib is a fast, lightweight alternative web UI for browsing Reddit without JavaScript or tracking, supporting RSS feeds, theming, and optional proxying of media.