OpenTofu

B tier on Infrastructure as Code ToolsScore 7.0 · #6 of 24

Android app: Not listed
Free plan: Yes
Runs on: Linux, Mac, self-hosted, Windows

opentofu.org

Summary

OpenTofu is a free infrastructure as code tool for defining cloud and on-premises resources in human-readable configuration files. Users write configuration, generate an execution plan, then apply approved changes in dependency order. Providers connect it to cloud platforms, SaaS services, and APIs; listed examples include AWS, Azure, Google Cloud Platform, Kubernetes, Helm, GitHub, Splunk, and Datadog. Reusable modules and a public registry support configurable collections of infrastructure. OpenTofu tracks infrastructure in a state file, builds a dependency graph, and can create or modify independent resources in parallel. Built-in client-side state encryption supports key providers such as PBKDF2, AWS KMS, GCP KMS, and OpenBao. Providers can be installed from registries, local mirrors, or caches, including for air-gapped workflows. OCI registries support modules and secondary provider installation, but are not yet the primary provider source. OpenTofu is presented as a drop-in Terraform replacement that preserves existing workflows and configurations. Official installation methods cover Linux, macOS, Windows, FreeBSD, and OCI container images. The project is maintained under the Linux Foundation as a community-driven open-source project. The OpenTofu plan is 0.00 USD per free.

Who it is for

OpenTofu suits teams defining infrastructure across cloud platforms, on-premises systems, and APIs through configuration files. It may also fit environments that need local provider mirrors, caches, or air-gapped installation workflows.

What is good

Plans changes before applying them
Supports reusable modules and a public registry
Can create independent resources in parallel
Built-in client-side state encryption

What to know first

OCI is not yet the primary provider source
State tracking depends on a state file

Verdict

OpenTofu offers a configuration-based workflow for planning and applying infrastructure changes, with providers, reusable modules, and state encryption. It is presented as a drop-in replacement for Terraform and is available at no cost.

OpenTofu plans and pricing

All plans

OpenTofu Free open-source infrastructure as code tool linuxfoundation.org · 30 Sept 2026

Compared on infrastructure as code tools

Free plan: Yesopentofu.org

Facts

Purpose: OpenTofu is an infrastructure as code tool for defining cloud and on-premises resources in human-readable configuration files.opentofu.org · 30 Sept 2026
Workflow: Its core workflow consists of writing configuration, generating an execution plan, and applying approved changes in dependency order.opentofu.org · 30 Sept 2026
Terraform compatibility: OpenTofu is presented as a drop-in replacement for Terraform that preserves existing workflows and configurations.opentofu.org · 30 Sept 2026
Providers: Providers let OpenTofu manage cloud platforms, SaaS providers, and other APIs, with examples including AWS, Azure, GCP, Kubernetes, Helm, GitHub, Splunk, and Datadog.opentofu.org · 30 Sept 2026
Modules: OpenTofu supports reusable modules for configurable collections of infrastructure and provides a public registry of modules and providers.opentofu.org · 30 Sept 2026
State tracking: OpenTofu stores infrastructure state in a state file that acts as the source of truth for determining required changes.opentofu.org · 30 Sept 2026
Parallel execution: OpenTofu builds a resource dependency graph and creates or modifies non-dependent resources in parallel.opentofu.org · 30 Sept 2026
State encryption: Built-in client-side state encryption supports key providers including PBKDF2, AWS KMS, GCP KMS, and OpenBao.opentofu.org · 30 Sept 2026
Provider installation: Providers can be installed from registries, local mirrors, or caches, and OpenTofu supports workflows for air-gapped environments.opentofu.org · 30 Sept 2026
OCI integration: OpenTofu supports OCI registries for modules and as a secondary provider installation source, but not yet as the primary provider source.opentofu.org · 30 Sept 2026
Supported systems: Official installation methods cover Linux distributions, macOS, Windows, FreeBSD, and OCI container images.opentofu.org · 30 Sept 2026
Community support: The project directs users to community Slack, GitHub discussions, issues, RFC discussions, and contributions.opentofu.org · 30 Sept 2026
Governance: OpenTofu is hosted and maintained under the Linux Foundation as a community-driven, impartial open-source project.linuxfoundation.org · 30 Sept 2026
Project scale: The official website reports an ecosystem of more than 3,900 providers and 23,600 modules.opentofu.org · 30 Sept 2026