A library for working with Bitcoin

A decentralized bitcoin exchange network

Bitcoin Wallet app for your Android device. Standalone Bitcoin node, no centralized backend required.

JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.

Desktop Bitcoin Wallet focused on security and privacy. Free and open source.

Brave Link Bubble Browser

Bitcoin Wallet strongly focused on privacy when transacting on the bitcoin network

RSKj is a Java implementation of the Rootstock protocol.

Java binding for ZeroMQ

Off-Chain Bitcoin payments using smart contracts

Lighthouse: a peer to peer crowdfunding app that uses Bitcoin

Flutter plugin to enable billing on iOS and Android.

GreenBits is a Bitcoin Wallet for Android provided by GreenAddress

A Java GUI for Open Transactions

Java SDK for BlockCypher

The MultiBit HD support library for Bitcoin hardware wallets (e.g. Trezor, KeepKey etc)

Bitcoin Stratum Mining Pool Server

BitcoinJ: Samourai Wallet and Sentinel

BIP47 reusable payment codes

Stratum / Electrum protocol and shell in Java

This is the official repository for SSI #1 - Bitcoin storage solution, which follows the latest standard for creating & storing bitcoin wallets/addresses

This project provides a Bitcoin Point of Sale system to allow merchants to accept bitcoins.

Seller.Trade - A Decentralized Bitcoin Seller Marketplace.

bitcoinj-based dnsseed

Rebecca

An implementation of opentimestamps as an Autopsy module to create and verify OTS proofs for digital evidence.

An android widget/app.