head to head · open source
Harness vs chalice
Harness has 38,378 GitHub stars, 3,397 forks, 106 open issues and last shipped 2 days ago. chalice has 11,059 stars, 1,011 forks, 495 open issues and last shipped 7 days ago. Harness leads on adoption by 247% (38,378 vs 11,059 stars). Harness is written in Go under Apache-2.0; chalice is written in Python under Apache-2.0. Harness has attracted 9% as many forks as stars, chalice 9%. Harness 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
| Harness | chalice | |
|---|---|---|
| GitHub stars | ★ 38K | ★ 11K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-09-16 | 2026-09-11 |
| Forks | ⑂ 3.4K | ⑂ 1.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Harness if
- You weight community size — 38K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick chalice if
- You want the chalice 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 chalice fits your workflow better
About Harness
Harness Open Source is an Apache 2.0, Go based developer platform that combines Git source control management, CI/CD pipelines, Gitspaces hosted development environments and artifact registries into one self hostable system for engineering teams that want end to end software delivery without stitching four separate products together.
read the full Harness overview →
About chalice
Chalice is an Apache 2.0 Python microframework from AWS for writing serverless applications that run on AWS Lambda, aimed at Python developers who want to declare API Gateway routes, scheduled tasks, and event handlers with decorators and ship them with a single command line tool.
read the full chalice overview →
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Frequently asked questions
Is Harness or chalice more popular?
Harness has 38,378 GitHub stars and chalice has 11,059. Harness has the larger community by that measure.
Are Harness and chalice free?
Both are open source. Harness is licensed under Apache-2.0 and chalice under Apache-2.0. Neither carries a licence fee.
What is the difference between Harness and chalice?
Harness is written in Go and chalice 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, Harness or chalice?
Choose Harness if you want the larger community (38,378 stars) or its Apache-2.0 licence terms. Choose chalice if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.