Collaboration Tools

Find and compare the best open source alternatives to popular software tools. Get weekly recommendations in your inbox.

AFFiNE faviconAFFiNE

A privacy-first collaborative knowledge platform that combines note-taking, whiteboarding, and database capabilities in a seamless workspace.

49,815 stars
Last commit Apr 17, 2025

Outline faviconOutline

Outline is a modern team knowledge base and wiki platform designed for secure, collaborative documentation.

31,646 stars
Last commit Apr 17, 2025

Appsmith faviconAppsmith

An open-source low-code platform for building internal tools, dashboards, and admin panels with drag-and-drop simplicity.

36,676 stars
Last commit Apr 17, 2025
apache-2.0

Gitea faviconGitea

Gitea is a lightweight, self-hosted Git service written in Go that provides a painless way to host your Git repositories.

48,159 stars
Last commit Apr 17, 2025
mit

Gitlab faviconGitlab

GitLab is a complete DevOps platform delivered as a single application that enables teams to collaborate, build, test, and deploy software efficiently.

23,958 stars
Last commit Apr 17, 2025

DocuSeal faviconDocuSeal

DocuSeal is an open-source document signing and form automation platform that provides a secure, privacy-focused alternative to DocuSign and similar services.

9,001 stars
Last commit Apr 7, 2025
agpl-3.0

Mastodon faviconMastodon

Mastodon is a decentralized social network platform that gives users control over their online social experience while maintaining privacy and freedom of expression.

48,124 stars
Last commit Apr 17, 2025
agpl-3.0

Odoo faviconOdoo

Odoo is an all-in-one business management software offering integrated applications for CRM, eCommerce, accounting, inventory, and more.

42,333 stars
Last commit Apr 17, 2025

Plane faviconPlane

A fully open-source project management tool with features and flexibility of Jira but with the speed and design aesthetic of Linear

35,373 stars
Last commit Apr 17, 2025
agpl-3.0