head to head · open source
Cal.com vs salt
Cal.com has 48,529 GitHub stars, 15,154 forks, 1,432 open issues and last shipped 4 days ago. salt has 15,661 stars, 5,610 forks, 1,885 open issues and last shipped yesterday. Cal.com leads on adoption by 210% (48,529 vs 15,661 stars). Cal.com is written in TypeScript under MIT; salt is written in Python under Apache-2.0. Cal.com has attracted 31% as many forks as stars, salt 36%. salt 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 | salt | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 16K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-14 | 2026-09-17 |
| Forks | ⑂ 15K | ⑂ 5.6K |
| 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 salt if
- You want the salt feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and salt 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 salt
Salt is a Python based, event driven automation framework that deploys, configures and manages complex IT systems at scale, built for system administrators, platform and infrastructure engineers, and DevOps teams responsible for keeping many servers, virtual machines, containers, databases, web servers and network devices in a consistent desired state.
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 salt more popular?
Cal.com has 48,529 GitHub stars and salt has 15,661. Cal.com has the larger community by that measure.
Are Cal.com and salt free?
Both are open source. Cal.com is licensed under MIT and salt under Apache-2.0. Neither carries a licence fee.
What is the difference between Cal.com and salt?
Cal.com is written in TypeScript and salt in Python. 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 salt?
Choose Cal.com if you want the larger community (48,529 stars) or its MIT licence terms. Choose salt if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.