Collaboration Tools

Apache Answer

Apache Answer is an open-source Q&A platform. Self-host a Stack Overflow-style community knowledge base with reputation,

Docmost

Docmost is an open-source collaborative wiki. Notion alternative for team documentation with real-time editing, spaces,

DocuSeal

DocuSeal is a self-hosted document signing platform. DocuSign alternative with PDF templates, signature requests, and au

Etherpad

Etherpad is a real-time collaborative document editor. Google Docs alternative for plain text with version history, in-l

Haven

Haven is a self-hosted publishing platform. Decentralized blogging with self-sovereign identity and federated reach. Ope

HumHub

HumHub is an open-source social network engine. Build a Facebook-style community for a company, school, or club with pro

Mattermost

Mattermost is a self-hosted Slack alternative. Team chat with channels, threads, voice and video, file sharing, and on-p

MediaWiki

MediaWiki is the engine that powers Wikipedia. Community wikis with revision history, talk pages, templates, and 600+ ex

ONLYOFFICE Docs

ONLYOFFICE Docs is a self-hosted office suite. MS Word, Excel, and PowerPoint compatible web editors with collaborative

ONLYOFFICE DocSpace

ONLYOFFICE DocSpace is a document collaboration platform. ONLYOFFICE Docs plus room-based file sharing, external user in

ONLYOFFICE Workspace

ONLYOFFICE Workspace is the full ONLYOFFICE platform. Docs, mail, calendar, and CRM in one self-hosted office suite. The

OpenProject

OpenProject is open-source project management. Gantt charts, agile boards, time tracking, and BIM integrations for engin

Penpot

Penpot is open-source design and prototyping. Figma alternative with SVG-native files, real-time collab, design tokens,

PLANKA

PLANKA is an open-source Trello alternative. Kanban boards with realtime updates, attachments, labels, and member assign

Pydio Cells

Pydio Cells is self-hosted document sharing. Modern Pydio with workspaces, audit logs, encryption at rest, and granular

Rallly

Rallly is a group scheduling tool. Doodle alternative for finding meeting times across timezones, no signup required for

Rocket.Chat is a self-hosted team chat platform. Slack and MS Teams alternative with channels, video, omnichannel custom

TeamSpeak Server is voice chat for gamers. Low-latency multi-channel server, the original gaming voice platform since 20

Virola Messenger

Virola Messenger is a self-hosted business messenger. Cross-platform team chat with file sharing, voice, screen sharing,

Web Call Server 5

Web Call Server 5 is a Flashphoner WebRTC server. Live broadcasting, video calls, IP camera streaming, and SIP integrati

WeKan

WeKan is an open-source kanban board. Trello alternative with multi-board organization, swimlanes, per-card members, and