Discover 13 open-source automation tools for 2026 to streamline DevOps, cut manual work, and scale secure, reliable infrastructure.

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A curated list of 13 open-source automation tools for DevOps and infrastructure teams in 2025, covering infrastructure as code (Spacelift Intent, OpenTofu, Pulumi), configuration management (Ansible, Puppet, Chef, Salt, CFEngine, Rudder), CI/CD (Jenkins), GitOps (Argo CD), monitoring (Prometheus), and workflow orchestration (Apache Airflow). Each tool is described with key features, licensing, and use cases, along with a comparison table highlighting execution models, configuration approaches, and strengths to help teams choose the right tool for their automation needs.

Top 13 Open-Source Automation Tools for 2025

What are the open-source automation tools?

Which open-source automation tool to pick?