head to head · open source
Cal.com vs croner
Cal.com has 49,651 GitHub stars, 15,521 forks, 1,432 open issues and last shipped yesterday. croner has 2,614 stars, 80 forks, 3 open issues and last shipped yesterday. Cal.com leads on adoption by 1,799% (49,651 vs 2,614 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%. croner 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 | ★ 50K | ★ 2.6K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 16K | ⑂ 80 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cal.com if
- You weight community size — 50K 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
[!WARNING] Use at your own risk. Cal.diy is the open source community edition of Cal.com and it is intended for users who want to self host their own Cal.diy instance. It is strictly recommended for personal, non production use. Please review all installation and configuration steps carefully. Self hosting requires advanced knowledge of server administration, database management, and securing sensitive data. Proceed only if you are comfortable with these responsibilities. [!TIP] For any commercial and enterprise ready scheduling infrastructure, use Cal.com, not Cal.diy; hosted by us or get invited to on prem…
read the full Cal.com overview →
About croner
Trigger functions or evaluate cron expressions in JavaScript or TypeScript. No dependencies. All features. Node. Deno. Bun. Browser. Try it live on jsfiddle , and check out the full documentation on croner.56k.guru . Croner Cron for JavaScript and TypeScript Trigger functions in JavaScript using Cron syntax. Evaluate cron expressions and get a list of upcoming run times. Supports seconds and year fields, L (last), W (weekday), (nth occurrence), and + (AND logic). Works in Node.js =18.0 (both require and import), Deno =2.0 and Bun =1.0.0. Works in browsers as standalone, UMD or ES module. Target different time…
read the full croner overview →
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Frequently asked questions
Is Cal.com or croner more popular?
Cal.com has 49,651 GitHub stars and croner has 2,614. 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 (49,651 stars) or its MIT licence terms. Choose croner if its feature set, stack or MIT licence fits better. Both are self-hostable.