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OpenTofu — The Open-Source Fork of Terraform
Everything about OpenTofu: installation, state encryption, provider registry, early evaluation, migration from Terraform, and how the two compare in 2026.
- State encryption
- Migration
- Provider registry
OpenTofu is the open-source, MPL-2.0-licensed fork of Terraform, maintained under the Linux Foundation. Created in 2023 after HashiCorp moved Terraform to the Business Source License, it is now a mature, production-ready alternative used by AWS, Oracle, GitHub, Harness, and thousands of organisations.
This hub collects every OpenTofu article on Terraform Pilot.
Getting started
#Compare with Terraform
#- Terraform vs OpenTofu in 2026: Which Should You Choose?
- Terraform vs OpenTofu: Key Differences Explained
OpenTofu-only features
#- OpenTofu State Encryption: Protect Secrets at Rest
- OpenTofu Early Variable Evaluation
- OpenTofu Provider Registry: Sources, Mirrors, Caching
Why OpenTofu?
#- Permissive licence — MPL 2.0, no BSL clauses, no vendor capture risk.
- Drop-in compatibility — same HCL, same state format (for non-1.6+ features), same provider ecosystem.
- Encrypted state — built-in AES-GCM with KMS-backed key providers (guide).
- Early evaluation — variables in backend config, module sources, and provider versions (guide).
- Open registry —
registry.opentofu.org, mirrorable for air-gapped deployments (guide). - Community governance — public RFC process, no single-vendor veto.
Reference
#- Terraform Glossary — terms apply identically to OpenTofu.
- Terraform Cheatsheet — replace
terraformwithtofu. - Browse all articles