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.
ctunnel is a program for tunneling and proxying TCP or UDP connections via a cryptographic tunnel. ctunnel can be used to secure any existing TCP or UDP based protocol, such as HTTP, Telnet, FTP, RSH, MySQL, VNC, DNS, XDMCP, NFS, etc. You can also chain or bounce connections to any number of intermediary hosts.
Proto Balance SSL negotiates an SSL connection and forwards the plain HTTP connection to your Web server. Certificate management like request generation, vendor certificate installation, and key generation are all done from an easy-to-use Web interface. It load balances connections over multiple Web servers. It performs 1000 SSL transaction per second. Traffic management and on-the-fly redirection of traffic. On-the-fly adding and removal of servers. Traffic accounting and client-connection-rate limits. Denial of server protection. Layer 7 inspection and X-Forwarded-For support.
Sleutel is a multi-platform password manager that is written using the Eclipse Rich Client Platform (RCP). Its goal is to manage password/ID pairs for accessing Web sites and to provide an example RCP application. It features configurable password generation, labeling of password entries (a la GMail), an intuitive UI following the Eclipse model, merge capabilities, and the ability to track usage count and dates of password entries. Sleutel is the Dutch word for key.
Suhosin is an advanced protection system for PHP installations. It was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. Suhosin comes in two independent parts that can be used separately or in combination. The first part is a small patch against the PHP core that implements a few low-level protections against buffer overflows or format string vulnerabilities. The second part is a powerful PHP extension that implements all the other protections. Suhosin is binary compatible with plain PHP installations.
KDX is a powerful cross-platform BBS-style encrypted Internet communications system that provides messaging, news, file and folder transfer, voice chat (Internet Telephone), text chat, remote access, trackers, and more. It uses strong encryption to protect communications for security and privacy. It is useful for groups that need to collaborate on a project via the Internet. It is also very useful for remote administration of a computer. It uses a client/server architecture.
WASTE is a mesh-based workgroup tool that allows for encrypted, private communication between distant parties on the Internet, independent of local network organization. It is RSA secured, and has been heralded as the most secure P2P connection protocol currently in development. WASTE functions as a both a server and a client under *nix, Mac OS X, and Windows, as well as a server only mode under *nix and Windows.