OpenSigner
FreemiumOpen-source non-custodial wallet solution
Developer ToolsOpen SourceCryptoGitHub
Added on January 31, 2026← Back to all tools
What does this tool do?
OpenSigner is an open-source, self-hostable wallet key management system designed for secure, non-custodial key management. The platform allows developers to issue and manage cryptographic keys for users without taking possession of those keys, providing a decentralized approach to authentication and key storage. By offering both hot and cold storage options, OpenSigner gives developers granular control over key security, with built-in recovery mechanisms and comprehensive authentication services.
AI analysis from Feb 18, 2026
Key Features
- Non-custodial key generation
- Hot and cold storage options
- Authentication service integration
- OTP-based key recovery
- iFrame-based security components
- API-driven architecture
Use Cases
- 1Blockchain and cryptocurrency wallet key management
- 2Decentralized application (dApp) authentication
- 3Secure user identity verification for web3 platforms
- 4Enterprise-level cryptographic key infrastructure
- 5Decentralized finance (DeFi) project key management
Pros & Cons
Advantages
- Open-source with transparent security model
- Self-hostable infrastructure provides maximum control
- Multiple key recovery methods including OTP and cold storage
Limitations
- Requires technical expertise to implement and manage
- Potentially complex setup for non-developer users
- Limited documentation for advanced configuration
Pricing Details
Pricing details not publicly available.
Who is this for?
Web3 developers, blockchain engineers, security teams in cryptocurrency and decentralized application projects