head to head · open source
Cal.com vs croner
Cal.com has 48,529 GitHub stars, 15,154 forks, 1,432 open issues and last shipped 4 days ago. croner has 2,592 stars, 68 forks, 3 open issues and last shipped 18 days ago. Cal.com leads on adoption by 1,772% (48,529 vs 2,592 stars). Cal.com is written in TypeScript under MIT; croner is written in TypeScript under MIT. Cal.com has attracted 31% as many forks as stars, croner 3%. 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 | croner | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 2.6K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-14 | 2026-08-31 |
| Forks | ⑂ 15K | ⑂ 68 |
| 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 croner if
- You want the croner feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and croner 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 croner
Croner is a JavaScript and TypeScript library for working with cron expressions. It lets developers trigger functions on a schedule or evaluate cron patterns to find upcoming run times, match dates, and calculate intervals. The project lives in the JavaScript runtime ecosystem and is designed for Node.js, Deno, Bun, and browser environments.
read the full croner overview →
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Frequently asked questions
Is Cal.com or croner more popular?
Cal.com has 48,529 GitHub stars and croner has 2,592. Cal.com has the larger community by that measure.
Are Cal.com and croner free?
Both are open source. Cal.com is licensed under MIT and croner under MIT. Neither carries a licence fee.
What is the difference between Cal.com and croner?
Cal.com is written in TypeScript and croner in TypeScript. 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 croner?
Choose Cal.com if you want the larger community (48,529 stars) or its MIT licence terms. Choose croner if its feature set, stack or MIT licence fits better. Both are self-hostable.