head to head · open source
portainer vs kcl
portainer has 38,767 GitHub stars, 2,934 forks, 757 open issues and last shipped yesterday. kcl has 2,440 stars, 177 forks, 19 open issues and last shipped yesterday. portainer leads on adoption by 1,489% (38,767 vs 2,440 stars). portainer is written in TypeScript under Zlib; kcl is written in Rust under Apache-2.0. portainer has attracted 8% as many forks as stars, kcl 7%. portainer was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (kubernetes), 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
| portainer | kcl | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 2.4K |
| License | Zlib | Apache-2.0 |
| Written in | TypeScript | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.9K | ⑂ 177 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick portainer if
- You weight community size — 39K stars and counting
- You want the Zlib license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick kcl if
- You want the kcl feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and kcl fits your workflow better
About portainer
Portainer Community Edition is a free, lightweight container management UI for Docker, Swarm, Podman, Kubernetes, and ACI environments. It is provided as is, at no cost, for the convenience of homelab operators, hobbyists, students, and anyone experimenting with containers on their own hardware. Portainer Business Edition builds on the same open source base and adds the features, hardening, and commercial support that production and enterprise environments require (RBAC, GitOps, edge management, audit, SSO, and more). Find out more about Portainer Business Edition features Take3 – get 3 free nodes of Portainer…
read the full portainer overview →
About kcl
KCL: Constraint based Record & Functional Language English 简体中文 Introduction Features What is it for Installation Documentation Contributing Introduction KCL is an open source, constraint based record and functional language that enhances the writing of complex configurations, including those for cloud native scenarios. With its advanced programming language technology and practices, KCL is dedicated to promoting better modularity, scalability, and stability for configurations. It enables simpler logic writing and offers ease of automation APIs and integration with homegrown systems. What is it for? You can use…
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Frequently asked questions
Is portainer or kcl more popular?
portainer has 38,767 GitHub stars and kcl has 2,440. portainer has the larger community by that measure.
Are portainer and kcl free?
Both are open source. portainer is licensed under Zlib and kcl under Apache-2.0. Neither carries a licence fee.
What is the difference between portainer and kcl?
portainer is written in TypeScript and kcl in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, portainer or kcl?
Choose portainer if you want the larger community (38,767 stars) or its Zlib licence terms. Choose kcl if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.