head to head · open source
Cal.com vs Hi.Events
Cal.com has 49,651 GitHub stars, 15,521 forks, 1,432 open issues and last shipped yesterday. Hi.Events has 4,113 stars, 747 forks, 193 open issues and last shipped yesterday. Cal.com leads on adoption by 1,107% (49,651 vs 4,113 stars). Cal.com is written in TypeScript under MIT; Hi.Events is written in PHP under a custom or non-standard licence. Cal.com has attracted 31% as many forks as stars, Hi.Events 18%. Hi.Events was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (open-source), so they are genuine substitutes rather than adjacent tools.
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 | Hi.Events | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 4.1K |
| License | MIT | Custom / other |
| Written in | TypeScript | PHP |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 16K | ⑂ 747 |
| 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 Hi.Events if
- You want the Hi.Events feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches PHP
- You evaluated both and Hi.Events 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 Hi.Events
Hi.Events Open source event ticketing and management platform Sell tickets online for conferences, nightlife events, concerts, club nights, workshops, and festivals. Self hosted or cloud. Your events, your brand, your data. Try Cloud → · Live Demo · Documentation · Website Deutsch · Português · Français · Italiano · Nederlands · Español · 中文 · 繁體中文 · 日本語 · Tiếng Việt · Türkçe · Magyar · Polski · Slovenčina · Ελληνικά Why Hi.Events? Most ticketing platforms charge per ticket fees and lock your data into their ecosystem. Hi.Events is a modern, open source alternative to Eventbrite, Tickettailor, Dice.fm, and other…
read the full Hi.Events overview →
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Frequently asked questions
Is Cal.com or Hi.Events more popular?
Cal.com has 49,651 GitHub stars and Hi.Events has 4,113. Cal.com has the larger community by that measure.
Are Cal.com and Hi.Events free?
Both are open source. Cal.com is licensed under MIT, and Hi.Events has no licence declared in this registry. Both are free to self-host.
What is the difference between Cal.com and Hi.Events?
Cal.com is written in TypeScript and Hi.Events 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 Hi.Events?
Choose Cal.com if you want the larger community (49,651 stars) or its MIT licence terms. Choose Hi.Events if its feature set, stack or Custom / other licence fits better. Both are self-hostable.