Open-source alternatives to Terraform

Developer & Infra · 3 free & open-source options

Looking to replace Terraform with something free and open-source? These 3 tools are the best open alternatives in 2026 — most are self-hostable, so you keep full control of your data and pay no subscription.

OpenTofu ›MPL-2.0
The community fork of Terraform, drop-in compatible and truly open.
Full profile ›GitHub ↗
Pulumi ›Apache-2.0
IaC in real programming languages: TypeScript, Python, Go.
Full profile ›GitHub ↗
Terragrunt ›MIT
Thin wrapper keeping large Terraform/OpenTofu setups DRY.
Full profile ›GitHub ↗

FAQ

What is the best open-source alternative to Terraform?

The top open-source alternative is OpenTofu — The community fork of Terraform, drop-in compatible and truly open. The full ranked list is above.

Are these Terraform alternatives free?

Yes. Every tool listed is open-source and free to use; most can be self-hosted so you keep full control of your data.

Can I self-host an alternative to Terraform?

Most of these tools are designed to run on your own server or machine, giving you privacy and no subscription fees.

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