Doppler is without a doubt my favorite secrets management platform

Doppler is a secrets management platform that provides a centralized solution for storing, managing, and syncing secrets across local development, multiple environments, CI/CD pipelines, and production deployments. It eliminates the limitations of .env files by offering features like automatic synchronization with cloud platforms (Vercel, Railway, Netlify), Kubernetes operator support, audit logging, automatic rotation, and webhook integrations. The platform supports both CLI and web UI workflows, allows personal environment overrides, and works offline with encrypted cached secrets. It integrates with deployment platforms natively or through custom webhooks for platforms like Dockploy.