head to head · open source
OpenTofu vs certimate
OpenTofu has 30,703 GitHub stars, 1,414 forks, 320 open issues and last shipped yesterday. certimate has 9,422 stars, 920 forks, 51 open issues and last shipped 8 days ago. OpenTofu leads on adoption by 226% (30,703 vs 9,422 stars). OpenTofu is written in Go under MPL-2.0; certimate is written in Go under MIT. OpenTofu has attracted 5% as many forks as stars, certimate 10%. OpenTofu 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 | certimate | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 9.4K |
| License | MPL-2.0 | MIT |
| Written in | Go | Go |
| Last push | 2026-11-02 | 2026-10-26 |
| Forks | ⑂ 1.4K | ⑂ 920 |
| 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 certimate if
- You want the certimate feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and certimate 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 certimate
🔒 Certimate English ｜ 简体中文 🚩 Introduction An open source and free self hosted SSL certificates ACME tool, automates the full cycle of issuance, deployment, renewal, and monitoring visually. Self hosted : Private deployment. All data is stored locally, to ensure data privacy and security. Cross Platforms : Compatible with various operating systems, including Windows/Linux/macOS. Zero Dependencies : No need to install databases, runtimes, or any frameworks. Ready to use out of the box. Low Resource Usage : Extremely lightweight, requiring only 20 MB of memory. Easy to Use : Automates certificate management with…
read the full certimate overview →
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Frequently asked questions
Is OpenTofu or certimate more popular?
OpenTofu has 30,703 GitHub stars and certimate has 9,422. OpenTofu has the larger community by that measure.
Are OpenTofu and certimate free?
Both are open source. OpenTofu is licensed under MPL-2.0 and certimate under MIT. Neither carries a licence fee.
What is the difference between OpenTofu and certimate?
OpenTofu is written in Go and certimate in Go. 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 certimate?
Choose OpenTofu if you want the larger community (30,703 stars) or its MPL-2.0 licence terms. Choose certimate if its feature set, stack or MIT licence fits better. Both are self-hostable.