head to head · open source
Pulumi vs robusta
Pulumi has 25,705 GitHub stars, 1,430 forks, 2,419 open issues and last shipped yesterday. robusta has 3,099 stars, 325 forks, 204 open issues and last shipped 4 days ago. Pulumi leads on adoption by 729% (25,705 vs 3,099 stars). Pulumi is written in Go under Apache-2.0; robusta is written in Python under MIT. Pulumi has attracted 6% as many forks as stars, robusta 10%. Pulumi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (containers), 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
| Pulumi | robusta | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 3.1K |
| License | Apache-2.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-09-19 | 2026-09-16 |
| Forks | ⑂ 1.4K | ⑂ 325 |
| 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 robusta if
- You want the robusta feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and robusta fits your workflow better
About Pulumi
Pulumi is an open source infrastructure as code tool that lets teams define and deploy cloud infrastructure using general purpose programming languages instead of YAML, aimed at developers, platform engineers, and agents working across AWS, Azure, Google Cloud Platform, and Kubernetes.
read the full Pulumi overview →
About robusta
Robusta is an open source alerting and monitoring project for Kubernetes, written in Python and released under the MIT license. The repository contains Robusta Classic, a rule based alert enrichment engine that connects to Prometheus through a webhook and adds operational context to alerts. It lives in the Kubernetes monitoring ecosystem and is compatible with kube prometheus stack, Prometheus Operator, and other Prometheus based setups.
read the full robusta overview →
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Frequently asked questions
Is Pulumi or robusta more popular?
Pulumi has 25,705 GitHub stars and robusta has 3,099. Pulumi has the larger community by that measure.
Are Pulumi and robusta free?
Both are open source. Pulumi is licensed under Apache-2.0 and robusta under MIT. Neither carries a licence fee.
What is the difference between Pulumi and robusta?
Pulumi is written in Go and robusta 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 robusta?
Choose Pulumi if you want the larger community (25,705 stars) or its Apache-2.0 licence terms. Choose robusta if its feature set, stack or MIT licence fits better. Both are self-hostable.