bitcoinjs-lib
SDKs
JavaScript/TypeScript library for Bitcoin transactions, addresses, and PSBTs.
Build: Self-Custody Wallets
Open SourceIntermediate
Loading page
BetaBetaLoading page
tools // discover
Discover the tools helping developers build on Bitcoin, Lightning, Nostr, and open source technologies.
context // pull
The best way to learn is to build.
These tools help developers move from learning to building, contributing, and proving their skills through real-world projects.
directory // explore
contribute // suggest
Know an API, SDK, or infrastructure project builders should discover? Send it our way — we review every suggestion before it goes live.
Filter by category
SDKs
JavaScript/TypeScript library for Bitcoin transactions, addresses, and PSBTs.
Build: Self-Custody Wallets
APIs
Bitcoin and Lightning APIs for African merchants, payouts, and payment apps.
Build: Payment Apps
APIs
Bitcoin Lightning banking APIs for wallets, remittances, and payment apps.
Build: Payment Apps
SDKs
Embed non-custodial Lightning into apps with a multi-platform SDK.
Build: Lightning Wallets
SDKs
Federated mint protocol for community Bitcoin custody and e-cash.
Build: Self-Custody Wallets
APIs
Bitcoin and Lightning APIs for invoices, on-chain, and LNURL without running your own node.
Build: Payment Apps
SDKs
Lightning Dev Kit — modular libraries for self-custodial Lightning apps.
Build: Lightning Wallets
APIs
Payment APIs for Bitcoin Lightning, fiat rails, and payouts across African markets.
Build: Payment Apps
Protocols
Decentralized protocol for notes, identity, and social apps.
Build: Nostr Clients
APIs
Bitcoin and Lightning APIs for payments, payouts, and currency conversion.
Build: Payment Apps
APIs
GraphQL APIs for Lightning payments, liquidity, and network intelligence.
Build: Payment Apps
SDKs
Chaumian e-cash protocol for Bitcoin Lightning mints.
Build: Payment Apps
APIs
Open-source Blockstream HTTP API for Bitcoin chain data and transactions.
Build: Bitcoin Infrastructure
SDKs
Low-level TypeScript toolkit for Nostr clients, relays, and events.
Build: Nostr Clients
APIs
Bitcoin and Lightning payment processing APIs for merchants and apps.
Build: Merchant Checkout
Protocols
Nostr-native protocol family for trust-minimized Bitcoin-to-fiat atomic swaps and community-operated escrow.
Build: BTC-Fiat Swaps
Protocols
Bitcoin statechain / Lightning-adjacent toolkit for fast transfers.
Build: Bitcoin Infrastructure