Open-source SDKs and libraries for building Bitcoin and Lightning applications.
Fully open-source. Maintained by industry-leading Bitcoin developers. Powers wallets like Cove, Envoy, and Mutiny. Funded by Spiral, OpenSats, and the BDK Foundation.
Fully open-source. Maintained by Spiral (Block). Powers apps like Mutiny Wallet and Cash App. Battle-tested in production.
Fully open-source. Implements BIP 78 (PayJoin V1) and BIP 77 (PayJoin V2). Funded by OpenSats and HRF. Created by Dan Gould.
Fully open-source. The most widely used Rust Bitcoin library. Foundation for BDK, LDK, and many other projects. Maintained by a dedicated team of Bitcoin developers.
Open-source SDK from Breez. Self-custodial by default with keys on user's device. Powers Lightning payments without requiring node management. Multiple implementations available (Spark and Liquid).
Mainnet beta. Enables fast, cheap, UX-friendly financial apps on Bitcoin. Supports asset issuance, wallet creation, and payments.
Weekly bitcoin analysis and product recommendations.
Email provider integration coming soon.
