Collaboration & Communication

Colanode

Apache-2.0

Local-first collaboration platform combining real-time chat, rich text pages, databases, and file management in a single self-hostable workspace.

Ever Teams

AGPL-3.0

Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.

Focalboard

Unknown

Self-hostable project management tool with Kanban boards, calendars, and table views, built for teams using Mattermost or standalone.

Huly

EPL-2.0

Combines project management, team chat, virtual office, and collaborative docs into a single platform. A self-hostable alternative to Linear, Jira, Slack, and Notion.

Plane

AGPL-3.0

Open source project management platform combining issues, wikis, and AI agents in one workspace. Available on cloud, self-hosted, and air-gapped deployments.

Baserow

Unknown

Open-source platform for building databases, internal apps, and automated workflows without writing code. Available on cloud or self-hosted.

Affine

Unknown

An open-source, local-first knowledge base that merges structured docs, infinite whiteboards, databases, and AI into a single workspace for teams and creators.

Campfire

MIT

Install your own group chat system with @mentions, DMs, and mobile support. One-time purchase, no monthly fees. Includes full source code for customization.

Cinny

AGPL-3.0

Cinny offers a simple, elegant, and secure interface for Matrix-based conversations, protected by end-to-end encryption.

CryptPad

AGPL-3.0

Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.

dDocs

AGPL-3.0

Write, organize, and collaborate in real-time with complete privacy and security. This app is an open-source, online/offline compatible, and AI-free alternative to Google Docs.

Docs

MIT

Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.

Element

AGPL-3.0

Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.

Ethora

Apache-2.0

Build branded chat apps with AI agents, group messaging, document exchange, and digital wallets using React and React Native components.

Excalidraw

MIT

Virtual whiteboard for sketching diagrams, flowcharts, and wireframes with a distinctive hand-drawn look. Real-time collaboration built in.

Fluxer

AGPL-3.0

Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.

Jitsi

Apache-2.0

Host encrypted video conferences directly in your browser, deploy on your own servers, or integrate into applications - all with this powerful open source platform.

LibreOffice

GPL-3.0

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

Mattermost

Unknown

Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.

Mezon

Unknown

Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.

Nextcloud

AGPL-3.0

Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.

ONLYOFFICE Docs

AGPL-3.0

Open-source online editor for documents, spreadsheets, presentations, and PDFs. Features real-time collaboration, AI integration, and accessibility tools.

Quiet

GPL-3.0

Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata leaks.

Rocket.Chat

Unknown

Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.