OpenSigner

Open-source, self-hostable wallet key management system for issuing non-custodial keys to users

opensigner.dev

Verified API available

Quick facts
What is it	Open-source, self-hostable wallet key management system for issuing non-custodial keys to users
Pricing	Unknown
Platform	Web Application
API	Yes
Best for	issuing non-custodial wallet keys, managing user wallet infrastructure
Domain registered	2025

Data updated March 8, 2026

What does OpenSigner do?

OpenSigner is an open-source wallet key management system designed for blockchain developers and web3 projects. It provides a self-hostable solution for issuing non-custodial keys to users, giving developers complete control over their key management infrastructure while maintaining user ownership of their wallets.

The tool operates as a transparent, community-driven project with its entire codebase available on GitHub. Developers can examine the code, contribute improvements, and deploy the system on their own infrastructure. This approach ensures there are no hidden processes or third-party dependencies in the key management workflow.

Blockchain developers building web3 applications benefit most from OpenSigner, particularly those who need to manage wallet creation and key distribution for their users while maintaining non-custodial principles. It's ideal for projects that prioritize transparency and want to avoid relying on external key management services.

Non-AI Developer Tools — Other

#blockchain#crypto#developer tools#open source#self-hosted

Key features

What makes it stand out

Open-source codebase for full transparency

Self-hostable deployment for complete control

Non-custodial key issuance to users

Wallet key management system

GitHub repository for community collaboration

Who is OpenSigner for?

Who benefits most from this tool

issuing non-custodial wallet keys

managing user wallet infrastructure

self-hosting key management systems

Trust & presence

Domain Domain registered 2025

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