Best Open Source Collaborative Workspaces using Testing Library in 2026

Excalidraw

Collaborative whiteboarding with a hand-drawn feel

Stars
121,722
Forks
13,391
Last commit
14 hours ago

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

Open Source Alternative to:

Miro

Affine

Collaborative knowledge creation and management platform

Stars
67,567
Forks
4,771
Last commit
5 hours ago

All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

Open Source Alternative to:

Notion

Rocket.Chat

Secure, flexible team communication platform

Stars
45,191
Forks
13,533
Last commit
4 hours ago

Open-source chat solution offering real-time messaging, video calls, and file sharing for teams of all sizes.

Open Source Alternative to:

Discord

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
46,466
Forks
3,155
Last commit
6 hours ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Mattermost

Secure collaboration platform for mission-critical work

Stars
36,317
Forks
8,548
Last commit
4 hours ago

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

Open Source Alternative to:

Microsoft Teams

Nextcloud

Secure cloud collaboration platform for organizations

Stars
34,691
Forks
4,835
Last commit
4 hours ago

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

Open Source Alternative to:

Microsoft Teams

Focalboard

Organize, plan, and collaborate with visual boards

Stars
26,066
Forks
2,529
Last commit
2 days ago

Open-source project management tool for teams. Create kanban boards, tables, and tasks to streamline workflows and boost productivity.

Open Source Alternative to:

Linear

Huly

Unified workspace for seamless team collaboration

Stars
25,418
Forks
1,839
Last commit
4 hours ago

An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

Open Source Alternative to:

Notion

Teable

Flexible database meets intuitive spreadsheet interface

Stars
21,160
Forks
1,255
Last commit
10 hours ago

Open-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.

Open Source Alternative to:

Airtable

Docs

Create, edit and share documents with real-time collaboration

Stars
16,422
Forks
574
Last commit
5 hours ago

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

Open Source Alternative to:

Notion

Ever Teams

Real-time work and project management platform

Stars
499
Forks
96
Last commit
4 hours ago

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

Open Source Alternative to:

Linear

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Excalidraw

Collaborative whiteboarding with a hand-drawn feel

Stars
121,722
Forks
13,391
Last commit
14 hours ago

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

Open Source Alternative to:

Miro

Affine

Collaborative knowledge creation and management platform

Stars
67,567
Forks
4,771
Last commit
5 hours ago

All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

Open Source Alternative to:

Notion

Rocket.Chat

Secure, flexible team communication platform

Stars
45,191
Forks
13,533
Last commit
4 hours ago

Open-source chat solution offering real-time messaging, video calls, and file sharing for teams of all sizes.

Open Source Alternative to:

Discord

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
46,466
Forks
3,155
Last commit
6 hours ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Mattermost

Secure collaboration platform for mission-critical work

Stars
36,317
Forks
8,548
Last commit
4 hours ago

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

Open Source Alternative to:

Microsoft Teams

Nextcloud

Secure cloud collaboration platform for organizations

Stars
34,691
Forks
4,835
Last commit
4 hours ago

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

Open Source Alternative to:

Microsoft Teams

Focalboard

Organize, plan, and collaborate with visual boards

Stars
26,066
Forks
2,529
Last commit
2 days ago

Open-source project management tool for teams. Create kanban boards, tables, and tasks to streamline workflows and boost productivity.

Open Source Alternative to:

Linear

Huly

Unified workspace for seamless team collaboration

Stars
25,418
Forks
1,839
Last commit
4 hours ago

An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

Open Source Alternative to:

Notion

Teable

Flexible database meets intuitive spreadsheet interface

Stars
21,160
Forks
1,255
Last commit
10 hours ago

Open-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.

Open Source Alternative to:

Airtable

Docs

Create, edit and share documents with real-time collaboration

Stars
16,422
Forks
574
Last commit
5 hours ago

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

Open Source Alternative to:

Notion

Ever Teams

Real-time work and project management platform

Stars
499
Forks
96
Last commit
4 hours ago

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

Open Source Alternative to:

Linear

Open Source Collaborative Workspaces using Testing Library

A curated collection of the best open source integrated platforms combining communication, task management, and document sharing. using Testing Library.