Open Source Secrets Management for DevOps in 2025

The modern DevOps landscape demands seamless secrets management that integrates naturally with your workflow, not as a security afterthought. The five leading open-source secrets management tools for DevOps teams are Infisical, HashiCorp Vault, OpenBao, External Secrets Operator (ESO), and Mozilla SOPS. Each tool fills a distinct role and has its strengths. If licensing is a showstopper, favor Infisical or OpenBao over Vault's Business Source License (BSL). For Kubernetes-heavy environments, pair your secrets store with ESO for smooth, policy-driven sync into the cluster. Enterprise features and at-scale operations require careful consideration of operational overhead. Optimize for developer experience and fast adoption with Infisical, especially if your team isn't primarily platform engineering experts. Use SOPS for version-controlling encrypted secrets in GitOps workflows, but pair with a KMS or secrets server for key management. Ultimately, the best tool for your team depends on your specific infrastructure and needs.