Bitcoin Development Tools

There are a ton of open source tools available for developers to use in order to save a lot of time while building Bitcoin based applications. There's no need to re-invent the wheel!

Blockchain Querying:

Bitcore (wallet & node infrastructure)
Bitiodine Cluster Analysis
Blockbook wallet indexing service
BlockSci high performance query engine
Fast Dat blockchain parser
Bitcoin Iterate blockchain parser
Blocks Iterator blockchain parser
Bitcoin Graph Database Builder
Bitcoin RPC API in your browser
Dshackle Archive blockchain ETL
Hadoop Crypto Ledger
Orbit Cluster Analysis
Rust Bitcoin Indexer
Database Generator

Electrum Servers:

Developer Tools:

Awesome Extensive Tools List
Bitcoin Projects Search Engine
Blockstream Satellite (send & receive data)
BTCPay Payment Processor
Bitcoin Wallet Tracker (HD wallet indexer)
Bria (multi-wallet manager)
Crypto Toolkit
Coinscope (network observer software)
Developer Stack (regtest docker setup)
hal (rust CLI utilities)
HD Key Derivation Tool
Mempoolcp (mempool copy between nodes)
Mempool-server (mempool download)
Mempool-client (mempool download)
Mule Tools (alternative txn broadcasting)
Nigiri (regtest docker setup)
PoW Network Simulator
PSBT Dump
PSBT Explorer
PSBT Faker
PSBT Toolkit
RPC GUI tool
Signed Message Verifier
Transaction Size Calculator
Vanity Address Generator
WYSIWYG Transaction Editor
xpub Version Converter

Bitcoin Scripting:

Programming Libraries:

Bitcoin Cryptography library (C++ & Java)
Bitcoin PHP RPC library
Bitcoin Slices (0 allocation Rust parser)
BitcoinJS (JavaScript library)
bcoin (JavaScript node & library)
bitcoinj (Java Library)
bitcoin-s (Scala library)
bitcoin-ts (TypeScript library)
btcd (Golang Library)
bitcoinlib (C# library)
Libauth (JavaScript library)
Libbitcoin (C++ library)
Libwally-core (crypto primitives)
micro-btc (JavaScript / TypeScript)
NBitcoin (.NET library)
NodeJS HD Key Library
PHP Library
PHP OP_RETURN Library
Pycoin Utilities
Python BIP-329 Wallet Label Library
Python Library
Python OP_RETURN Library
Python Tools
Python Utils
React Native SDK
Ruby Library
Rust Library
secp256k1-kmp (Kotlin library)
Spring Boot Starter
Swift Library

Bitcoin Development Tools

Blockchain Querying:

Electrum Servers:

Developer Tools:

Bitcoin Scripting:

Programming Libraries:

Signet & Testnet Faucets: