Phase

In plain words

Phase is an open source application secrets manager designed for engineering teams to secure and manage application secrets across development and production environments. The platform helps teams store, control, and deploy sensitive credentials safely throughout their workflow. Built as a developer tool with GitHub integration, Phase provides security-focused functionality for teams that need to manage secrets at scale, making it suitable for organizations prioritizing secure secret management practices.

written from the facts on this page · September 2026

From the sources

Open source platform for fast-moving engineering teams to secure and deploy application secrets — from development to production.

Open source platform to securely access, manage and deploy application secrets, from development to production. Agents use freshly minted dynamic secrets with their own identity. If they run into any access issues, they automatically ping a team member and ask for higher privileges only when needed. Complete visibility throughout: destructive actions like SQL DROP get blocked and audit-logged. Agents use decoy secrets managed by Phase when making outbound requests to third-party services. The Phase AI proxy inspects each request and checks it against your policy — then injects the real secretfrom phase.dev

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  Phase – open-source encryption and key management for developers2023 · github.com · ▲9

  Hello HN! We are developers and security researchers making tools for developers to encrypt data at an application level while maintaining sole control of their keys. We believe that data should always be encrypted unless it is part of an active computation. Encryption is relatively easy, but key management is challenging. There are plenty of encryption tools and SDKs that are out there (Hashicorp Vault, AWS KMS etc.) but we are focusing on ease and speed of implementation, developer experience and self custody of keys. A few months ago, we quit our jobs and started full time on Phase. So…

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