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OpenTofu

OpenTofu is a command-line infrastructure-as-code tool that provides a community-driven drop-in replacement for Terraform.

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OpenTofu is a command-line infrastructure-as-code tool that provides a community-driven drop-in replacement for Terraform. It helps homelab and cloud users declare, plan, and apply infrastructure from existing Terraform configurations. Use it when you want open, repeatable infrastructure workflows under Linux Foundation stewardship.

Platform availability

Available on 1 of 9 platforms

  • Unraid
  • TrueNAS (not listed)
  • Umbrel (not listed)
  • ZimaOS (not listed)
  • Proxmox (not listed)
  • Helm (not listed)
  • Mac (not listed)
  • Windows (not listed)
  • Linux (not listed)

Health score?A 0-100 score computed nightly from four factors: maintained (40%: recent commits and steady activity), popular (25%: GitHub stars, log scale), easy to install (20%: platforms, install notes, setup guides, Docker image) and light to run (15%: minimum RAM, ARM support). When the source code has been checked, a fifth factor, security check (20%: automated scan for committed secrets, unsafe desktop-app settings, known-vulnerable dependencies and project hygiene; any serious finding caps it at 20), is added. Factors without data are left out and the rest are rescaled.

82/100 Excellent

Maintained
100last commit 7 days ago
Popular
9030,414 GitHub stars
Easy to install
351 install platform, install notes, Docker image
Light to run
No data

Based on 3 of 4 factors.

Availability: platform listings confirmed today, links checked 15 days ago

GitHub stars
30,414
Open issues
334
Last commit
2026-10-06
Latest release
v1.13.1
License
MPL-2.0
Activity
declining

Checked 6 days ago - source: GitHub (opentofu/opentofu)

Resources & Compatibility

Requirements not published yet.

Checked 14 days ago - source: Docker Hub image tags and published docs

First-install notes

  • If using Alpine, run the script If you are on Alpine Linux, run the provided installer script instead of downloading the package by hand. It detects your CPU architecture (the type of computer it runs on) and installs the latest OpenTofu, so you avoid installing an unsupported or mismatched version. source
  • Give tofu init backend settings If your remote state backend (where OpenTofu stores its saved changes) needs configuration, add values with -backend-config flags when you run tofu init. Without the right settings, OpenTofu may not find or connect to the state backend you intend to use. source
  • Cache provider downloads (optional) Set TF_PLUGIN_CACHE_DIR (a setting that tells OpenTofu where to store downloaded plugins) to a folder like ~/.tofu.d/plugin-cache before running tofu init. This stores provider plugins in one shared place, so later runs reuse them instead of downloading the same files again. source
  • Command-line interface usage OpenTofu is a command-line interface (CLI) tool. In interfaces that expose Post Arguments, supply the tofu command and flags you want to run. source
  • Getting started Use the project's Getting Started guide for installation instructions. source

Fetched 7 days ago - each note links to its source

Alternatives (2)

  • Ansible - Ansible is a digital conductor that automates repetitive computer tasks.
  • Terraform - Terraform is an infrastructure-as-code tool that lets DevOps and platform teams safely build, change, and version cloud and on-premises inf…

Checked 11 days ago - source: AlternativeTo

Common questions

How do I pass remote state backend settings to OpenTofu during init?

Add the required values with -backend-config flags when you run tofu init. If the backend settings are missing, OpenTofu may not find or connect to the state backend you intend to use.

Can I cache provider plugins so repeated tofu init runs do not re-download them?

Set TF_PLUGIN_CACHE_DIR to a folder such as ~/.tofu.d/plugin-cache before running tofu init. This stores provider plugins in a shared place so later runs can reuse them.

Can I switch from Terraform without rewriting my existing configuration?

OpenTofu is described as a drop-in replacement for Terraform that preserves your existing workflows and configurations.

Are OpenTofu nightly builds suitable for production?

No. Nightly builds are experimental, are not intended for production use, and are removed after 30 days.

What OpenTofu CI/CD issue was reported for self-managed GitLab?

A user reported a failed attempt to migrate Terraform CI/CD templates to the OpenTofu component on a self-managed GitLab install. They said they had to mirror a full repository and maintain it.

Answers sourced from github.com, github.com, github.com, opentofu.org, www.reddit.com

Community

Collected 14 days ago - public community threads