head to head · open source
OpenTofu vs robusta
OpenTofu has 30,703 GitHub stars, 1,414 forks, 320 open issues and last shipped yesterday. robusta has 3,128 stars, 327 forks, 204 open issues and last shipped yesterday. OpenTofu leads on adoption by 882% (30,703 vs 3,128 stars). OpenTofu is written in Go under MPL-2.0; robusta is written in Python under MIT. OpenTofu has attracted 5% as many forks as stars, robusta 10%. robusta 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
| OpenTofu | robusta | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 3.1K |
| License | MPL-2.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 1.4K | ⑂ 327 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenTofu if
- You weight community size — 31K stars and counting
- You want the MPL-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 OpenTofu
Homepage Slack Get Started OpenTofu is an OSS tool for building, changing, and versioning infrastructure safely and efficiently. OpenTofu can manage existing and popular service providers as well as custom in house solutions. Getting help and contributing Have a question? Post it in GitHub Discussions Open a GitHub issue Join us in the opentofu channel on the CNCF Slack! Want to contribute? Please read the Contribution Guide. Recurring Events Community Meetings on Wednesdays at 12:30 UTC (calendar) Technical Steering Committee Meetings every other Tuesday at 4pm UTC (calendar) [!TIP] For more OpenTofu events…
read the full OpenTofu overview →
About robusta
Robusta Classic Prometheus Alert Enrichment for Kubernetes Note: This repository contains Robusta Classic — the rule based alert enrichment engine. For AI powered root cause analysis, see HolmesGPT. Both can be installed together as part of the Robusta platform. What Can Robusta Do? How it Works Installation Integrations ↗ Docs ↗ Slack Community ↗ Compatible with kube prometheus stack, Prometheus Operator, and more. Robusta integrates with Prometheus by webhook and adds features like: Smart Grouping reduce notification spam with Slack threads 🧵 AI Investigation Kickstart alert investigation with AI (optional)…
read the full robusta overview →
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Frequently asked questions
Is OpenTofu or robusta more popular?
OpenTofu has 30,703 GitHub stars and robusta has 3,128. OpenTofu has the larger community by that measure.
Are OpenTofu and robusta free?
Both are open source. OpenTofu is licensed under MPL-2.0 and robusta under MIT. Neither carries a licence fee.
What is the difference between OpenTofu and robusta?
OpenTofu 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, OpenTofu or robusta?
Choose OpenTofu if you want the larger community (30,703 stars) or its MPL-2.0 licence terms. Choose robusta if its feature set, stack or MIT licence fits better. Both are self-hostable.