Teller
The universal secrets manager for developers.
Overview
Teller is an open-source, command-line tool that acts as a universal interface for secrets management. It allows developers to fetch secrets from various providers (like Vault, AWS Secrets Manager, etc.) and inject them into application processes. This decouples applications from the specific secrets store being used, making it easier to switch providers or use multiple providers at once.
✨ Key Features
- Universal provider interface
- Injects secrets as environment variables
- Redacts secrets from command output
- YAML-based configuration
- Open source
🎯 Key Differentiators
- Provider-agnostic, works with many backends
- Focus on being a universal client, not a storage solution
- Simple, declarative configuration
Unique Value: Decouples applications from secrets providers, allowing developers to use a single, consistent workflow to access secrets regardless of where they are stored.
🎯 Use Cases (3)
✅ Best For
- Running a local development server with secrets fetched from AWS Secrets Manager
- Executing a script in a CI/CD pipeline that needs credentials from both Vault and Azure Key Vault
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Teams needing a central secrets storage solution (Teller is a client, not a server)
- Users who prefer a graphical user interface
🏆 Alternatives
Unlike the CLIs of specific providers (Vault, Doppler), Teller is designed to work with all of them, providing a layer of abstraction and flexibility.
💻 Platforms
🔌 Integrations
💰 Pricing
Free tier: Completely free and open source.
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