head to head · open source
Pulumi vs st2
Pulumi has 25,840 GitHub stars, 1,478 forks, 2,419 open issues and last shipped yesterday. st2 has 6,556 stars, 797 forks, 603 open issues and last shipped 5 days ago. Pulumi leads on adoption by 294% (25,840 vs 6,556 stars). Pulumi is written in Go under Apache-2.0; st2 is written in Python under Apache-2.0. Pulumi has attracted 6% as many forks as stars, st2 12%. Pulumi 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
| Pulumi | st2 | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 6.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-11-02 | 2026-10-29 |
| Forks | ⑂ 1.5K | ⑂ 797 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Pulumi if
- You weight community size — 26K 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 st2 if
- You want the st2 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 st2 fits your workflow better
About Pulumi
Infrastructure as Code for Humans and Agents Pulumi Infrastructure as Code is the easiest way to build and deploy infrastructure, of any architecture and on any cloud, using programming languages that you already know and love. Code and ship infrastructure faster with your favorite languages and tools, and embed IaC anywhere with Automation API. Simply write code in your favorite language and Pulumi automatically provisions and manages your resources on AWS, Azure, Google Cloud Platform, Kubernetes, and 300+ providers using an infrastructure as code approach. Skip the YAML, and use standard language features…
read the full Pulumi overview →
About st2
StackStorm is a platform for integration and automation across services and tools, taking actions in response to events. Learn more at www.stackstorm.com. TL;DR Install Get yourself a clean 64 bit Linux box that fits the system requirements. Run the installer script: Read the docs: Questions? Check out forum.stackstorm.com Or join our Slack community StackStorm Overview About StackStorm is a platform for integration and automation across services and tools. It ties together your existing infrastructure and application environment so you can more easily automate that environment with a particular focus on taking…
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Frequently asked questions
Is Pulumi or st2 more popular?
Pulumi has 25,840 GitHub stars and st2 has 6,556. Pulumi has the larger community by that measure.
Are Pulumi and st2 free?
Both are open source. Pulumi is licensed under Apache-2.0 and st2 under Apache-2.0. Neither carries a licence fee.
What is the difference between Pulumi and st2?
Pulumi is written in Go and st2 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, Pulumi or st2?
Choose Pulumi if you want the larger community (25,840 stars) or its Apache-2.0 licence terms. Choose st2 if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.