Bitcoin is a peer-to-peer electronic cash system that is completely decentralized, without the need for a central server or trusted parties. Users hold the crypto keys to their own money and transact directly with each other, with the help of a P2P network to check for double-spending.
Guacamole is an HTML5 Web application that provides access to desktop environments using remote desktop protocols such as VNC or RDP. A centralized server acts as a tunnel and proxy, allowing access to multiple desktops through a Web browser. No plugins are needed. The client requires nothing more than a Web browser supporting HTML5 and AJAX.
Zyan Communication Framework simplifies development of distributed applications. It works on Windows, Linux, Mac OS, and Android platforms via .NET or Mono runtimes. It features LINQ support for three-tier applications, full duplex TCP support, traffic, compression, and encryption, transparent support for events and EBC (event-based components), and Windows and LDAP authentication support.
glNetViz is a tool for visualizing computer network topologies with WebGL. With the abilities of real time visualizing network traffics flowing around the local network and to/from the Internet, you can manage the various network more easily and efficiently. glNetViz is intended to be a convenient tool that can easily visualize the network topology from the serialized data in YAML or JSON.
Zyan Drench is a simple yet very entertaining game developed using the Zyan Communication Framework. The Game board is a random picture of size 15x15. Start from the top-left corner of the board. Select a new color for the top-left pixel, and all adjacent pixels of the same color will be painted over with the new color. The goal is to drench the whole board with your own color. Zyan Drench has several modes: play against Android phone (with adjustable skill level), play solo (classic single-player mode), and network game. It is completely ad-free and open source.
Wayland is a protocol for a compositor to talk to its clients, as well as a C library implementation of that protocol. The compositor can be a standalone display server running on Linux kernel modesetting and evdev input devices, an X application, or a wayland client itself. The clients can be traditional applications, X servers (rootless or fullscreen), or other display servers.