head to head · open source
Cal.com vs Easy!Appointments
Cal.com has 48,529 GitHub stars, 15,154 forks, 1,432 open issues and last shipped 4 days ago. Easy!Appointments has 4,377 stars, 1,567 forks, 164 open issues and last shipped 4 days ago. Cal.com leads on adoption by 1,009% (48,529 vs 4,377 stars). Cal.com is written in TypeScript under MIT; Easy!Appointments is written in PHP under GPL-3.0. Cal.com has attracted 31% as many forks as stars, Easy!Appointments 36%. Easy!Appointments was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| Cal.com | Easy!Appointments | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 4.4K |
| License | MIT | GPL-3.0 |
| Written in | TypeScript | PHP |
| Last push | 2026-09-14 | 2026-09-14 |
| Forks | ⑂ 15K | ⑂ 1.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cal.com if
- You weight community size — 49K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Easy!Appointments if
- You want the Easy!Appointments feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches PHP
- You evaluated both and Easy!Appointments fits your workflow better
About Cal.com
Cal.diy is a fully open source, community maintained fork of Cal.com, stripped of all enterprise and commercial features. It provides a self hosted scheduling platform built on the T3 stack (Next.js, tRPC, Prisma, Tailwind CSS, Zod), licensed under MIT with no proprietary code or license keys required.
read the full Cal.com overview →
About Easy!Appointments
Easy!Appointments is a free, open source, self hosted appointment scheduling platform written in PHP and released under the GPL 3.0 license. It runs on the CodeIgniter framework with a MySQL database and a JavaScript front end, and it is distributed through the project's GitHub repository at alextselegidis/easyappointments. The application is designed to adapt to a business rather than force a business to adapt to it, covering both simple appointment booking and more advanced scheduling logic.
read the full Easy!Appointments overview →
More in Business Software
Related comparisons
More Scheduling & Event Management projects
Compare either of these against the rest of the Scheduling & Event Management field.
Frequently asked questions
Is Cal.com or Easy!Appointments more popular?
Cal.com has 48,529 GitHub stars and Easy!Appointments has 4,377. Cal.com has the larger community by that measure.
Are Cal.com and Easy!Appointments free?
Both are open source. Cal.com is licensed under MIT and Easy!Appointments under GPL-3.0. Neither carries a licence fee.
What is the difference between Cal.com and Easy!Appointments?
Cal.com is written in TypeScript and Easy!Appointments in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Cal.com or Easy!Appointments?
Choose Cal.com if you want the larger community (48,529 stars) or its MIT licence terms. Choose Easy!Appointments if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.