head to head · open source
Harness vs chalice
Harness has 38,798 GitHub stars, 3,451 forks, 106 open issues and last shipped yesterday. chalice has 11,060 stars, 1,018 forks, 495 open issues and last shipped 6 days ago. Harness leads on adoption by 251% (38,798 vs 11,060 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 | ★ 39K | ★ 11K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-11-02 | 2026-10-28 |
| Forks | ⑂ 3.5K | ⑂ 1.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Harness if
- You weight community size — 39K 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 Harness Open Source is an open source development platform packed with the power of code hosting, automated DevOps pipelines, hosted development environments (Gitspaces), and artifact registries. Overview Harness Open source is an open source development platform packed with the power of code hosting, automated DevOps pipelines, Gitspaces, and artifact registries. Running Harness locally The latest publicly released docker image can be found on harness/harness. To install Harness yourself, simply run the command below. Once the container is up, you can visit in your browser. The Harness image uses a…
read the full Harness overview →
About chalice
=========== AWS Chalice =========== .. image:: :target: :alt: Package Version .. image:: :target: :alt: Python Versions .. image:: :target: :alt: Documentation Status .. image:: :target: :alt: License .. image:: :target: :alt: Chalice Logo Chalice is a framework for writing serverless apps in Python. It allows you to quickly create and deploy applications that use AWS Lambda. It provides: A command line tool for creating, deploying, and managing your app A decorator based API for integrating with Amazon API Gateway, Amazon S3, Amazon SNS, Amazon SQS, and other AWS services. Automatic IAM policy generation You…
read the full chalice overview →
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Frequently asked questions
Is Harness or chalice more popular?
Harness has 38,798 GitHub stars and chalice has 11,060. 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 (38,798 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.