Open. Democratic. Project management platform.

Aleth – Ethereum C++ client, tools and libraries

CoinRelay: CryptoCurrency payment response scripting language

fiatleak.com - watch the world's currencies flow into BTC in realtime

Opensource Bitcoin Exchange Software

The core server engine for Trillek

Freenet REference Daemon

NB: NO LONGER MAINTAINED. Beware of outdated dependencies. Please fork and update.

e-hääletamise tarkvara

Bitcoin Central

Share your Bitcoin address so that people can pay you.

OpenVPN is an open source VPN daemon

A set of small, responsive CSS modules that you can use in every web project.

Create agents that monitor and act on your behalf. Your agents are standing by!

You want fart noises as you scroll? We've got you covered.

Do They Accept Bitcoin: The Chrome Extension. https://chrome.google.com/webstore/detail/do-they-accept-bitcoin/nofccoknfcageikhnhfhkpcdciapdaja

Stoppin' it.

Open-Transactions democratizes financial and monetary actions. You can use it for issuing currencies/stock, paying dividends, creating asset accounts, sending/receiving digital cash, writing/deposi…

A Java GUI for Open Transactions

A bitcoin notify service

Reference implementation of the Peercoin protocol.

Bitcoin arbitrage - opportunity detector

Abe: block browser for Bitcoin and similar currencies

Bitcoin Point of Sale System

UNMAINTAINED - See: https://github.com/ruimarinho/bitcoin-core - Communicate with bitcoind via JSON-RPC

Create your own private bitcoin testnet

JavaScript Client-Side Bitcoin Wallet Generator

Settlers 1 (Serf City) clone.

Chrome extension that allows quick lookup of Bitcoin addresses from the context menu.