Open source t3-stack projects
Every project in the registry tagged t3-stack, ranked by real GitHub adoption.
Self-host your own scheduling page, no vendor required
Effortless group scheduling for seamless collaboration
Type-safe feature flags and remote config for developers
Related tags
Frequently asked questions
How many open source t3-stack projects are there?
This registry tracks 3 projects tagged t3-stack, with 53,956 GitHub stars between them. The most-adopted is Cal.com at 48,529 stars.
Are these t3-stack projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which t3-stack project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these t3-stack projects still maintained?
2 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.