European DevOps and IaC Tools

OpenTofu for the language and engine — it is a drop-in fork of Terraform 1.5, governed by the Linux Foundation, and adds features HashiCorp has not, such as state encryption. For the managed layer that Terraform Cloud provides, Spacelift from Poland is the strongest option and supports OpenTofu, Terraform, Pulumi, CloudFormation and Ansible from one control plane.

For most estates it is genuinely a matter of swapping the binary, because OpenTofu forked from Terraform 1.5.x before the licence change and maintains compatibility. The friction appears if you use Terraform features added after the fork, or provider versions pinned to HashiCorp's registry. Test on a non-production stack first, as with any engine swap.

Because whatever applies your plans holds credentials to your entire infrastructure. A managed service like Terraform Cloud means those credentials sit with a US vendor. Spacelift supports self-hosted workers, and Digger is designed around the principle that plans run inside your own CI so no third party ever holds the keys.

Both remain viable and Spacelift orchestrates both. This category is specifically about the alternatives to Terraform's licence and to HashiCorp's managed offering — the choice of language is a separate decision from the choice of who runs your automation.