head to head · open source
Cal.com vs laminas-eventmanager
Cal.com has 48,529 GitHub stars, 15,154 forks, 1,432 open issues and last shipped 4 days ago. laminas-eventmanager has 1,016 stars, 19 forks, 9 open issues and last shipped 4 days ago. Cal.com leads on adoption by 4,676% (48,529 vs 1,016 stars). Cal.com is written in TypeScript under MIT; laminas-eventmanager is written in PHP under BSD-3-Clause. Cal.com has attracted 31% as many forks as stars, laminas-eventmanager 2%. Cal.com 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.
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Side by side
| Cal.com | laminas-eventmanager | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 1.0K |
| License | MIT | BSD-3-Clause |
| Written in | TypeScript | PHP |
| Last push | 2026-09-14 | 2026-09-14 |
| Forks | ⑂ 15K | ⑂ 19 |
| 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 laminas-eventmanager if
- You want the laminas-eventmanager feature set and don't need the biggest community
- You prefer the BSD-3-Clause license terms
- Your stack matches PHP
- You evaluated both and laminas-eventmanager 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 laminas-eventmanager
laminas eventmanager is a PHP library for triggering and listening to events inside an application. It belongs to the Laminas ecosystem, the collection of PHP components and frameworks maintained under the Laminas organization, and it is distributed under the BSD 3 Clause license. The project has been on GitHub for roughly seven years and carries about 1,016 stars with 9 open issues. Its published GitHub description is short and literal: trigger and listen to events within a PHP application.
read the full laminas-eventmanager overview →
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Frequently asked questions
Is Cal.com or laminas-eventmanager more popular?
Cal.com has 48,529 GitHub stars and laminas-eventmanager has 1,016. Cal.com has the larger community by that measure.
Are Cal.com and laminas-eventmanager free?
Both are open source. Cal.com is licensed under MIT and laminas-eventmanager under BSD-3-Clause. Neither carries a licence fee.
What is the difference between Cal.com and laminas-eventmanager?
Cal.com is written in TypeScript and laminas-eventmanager 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 laminas-eventmanager?
Choose Cal.com if you want the larger community (48,529 stars) or its MIT licence terms. Choose laminas-eventmanager if its feature set, stack or BSD-3-Clause licence fits better. Both are self-hostable.