Open source version of Google Authenticator (except the Android app)

A decentralized bitcoin exchange network

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

XChange is a Java library providing a streamlined API for interacting with 60+ Bitcoin and Altcoin exchanges providing a consistent interface for trading and accessing market data.

Open source fork of the Google Authenticator Android app

🚀 Open-source Ethereum consensus client written in Java

monerujo: An Android Monero Wallet

Android app (and widget collection) that displays sunlight and moonlight times.

Lighthouse: a peer to peer crowdfunding app that uses Bitcoin

Price alarms for Bitcoin, cryptocurrencies, cryptoassets, futures and options.

A Strategy game based on Dwarf Fortress

Java library to retrieve trading pairs and last value from exchanges.

A java port of the MicroRaiden project: https://github.com/raiden-network/microraiden

SSH Server using DropBear

A scriptable, Ethereum aware, automated IPFS pinner

PegaSys' Enterprise Blockchain Client