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Top Open Source Infrastructure as Code (IaC) Tools in 2026

A curated collection of the 5 best free and open-source Infrastructure as Code (IaC) tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.

  • Terrateam

    GitOps-native infrastructure orchestration for Terraform

    Stars
    1,269
    Last commit
    10d ago
    License
    MPL-2.0

  • Pulumi

    Infrastructure as Code in any programming language

    Stars
    25,614
    Last commit
    10d ago
    License
    Apache-2.0

  • OpenTofu

    Open-source Terraform alternative for cloud infrastructure

    Stars
    29,944
    Last commit
    10d ago
    License
    MPL-2.0

  • Nitric

    Infrastructure from code for any cloud

    Stars
    2,014
    Last commit
    7mo ago
    License
    Apache-2.0

  • Digger

    Open-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.

    Stars
    5,032
    Last commit
    1mo ago
    License
    MIT
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Showing 5 of 5 open-source tools