Open-source projects tagged “monorepo”

Open-source and self-hostable projects tagged “monorepo” on GitHub, with license, free-edition limits and setup checked against official sources.

Twenty
A modern open-source CRM you can self-host and extend through its API.
Stars58k
Last commitOct 10, 2026
LicenseAGPL-3.0
Mattermost
A self-hostable team chat platform with channels, threads and integrations, popular for secure and technical teams.
Stars39k
Last commitOct 10, 2026
LicenseAGPL-3.0