head to head · open source
OpenTofu vs spug
OpenTofu has 30,204 GitHub stars, 1,367 forks, 320 open issues and last shipped yesterday. spug has 11,073 stars, 2,196 forks, 9 open issues and last shipped 2 days ago. OpenTofu leads on adoption by 173% (30,204 vs 11,073 stars). OpenTofu is written in Go under MPL-2.0; spug is written in JavaScript under AGPL-3.0. OpenTofu has attracted 5% as many forks as stars, spug 20%. 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.
← all 8884 open source comparisons
Side by side
| OpenTofu | spug | |
|---|---|---|
| GitHub stars | ★ 30K | ★ 11K |
| License | MPL-2.0 | AGPL-3.0 |
| Written in | Go | JavaScript |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 1.4K | ⑂ 2.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenTofu if
- You weight community size — 30K 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 spug if
- You want the spug feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and spug fits your workflow better
About OpenTofu
OpenTofu is an open source infrastructure as code (IaC) tool that enables users to define and manage cloud and on premises infrastructure using declarative configuration files. It lives in the cloud infrastructure management ecosystem and serves as a community driven fork of Terraform, maintaining compatibility with Terraform’s configuration language and provider ecosystem while operating under the MPL 2.0 license.
read the full OpenTofu overview →
About spug
Spug is a lightweight, agent free automatic operations and maintenance platform for small and medium sized enterprises, combining host management, batch execution, a browser terminal, file management, application release, pipelines, task planning, a configuration center, monitoring, and alerting in one AGPL 3.0 open source system.
More in Infrastructure & Operations
Related comparisons
More Cloud Infrastructure Management projects
Compare either of these against the rest of the Cloud Infrastructure Management field.
Frequently asked questions
Is OpenTofu or spug more popular?
OpenTofu has 30,204 GitHub stars and spug has 11,073. OpenTofu has the larger community by that measure.
Are OpenTofu and spug free?
Both are open source. OpenTofu is licensed under MPL-2.0 and spug under AGPL-3.0. Neither carries a licence fee.
What is the difference between OpenTofu and spug?
OpenTofu is written in Go and spug in JavaScript. 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 spug?
Choose OpenTofu if you want the larger community (30,204 stars) or its MPL-2.0 licence terms. Choose spug if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.