Enzyme is an architecture for creating user-searching-user applications. Right now, it is primarily useful as a resume create/search and HR management system. However, it's potential uses are wide-ranging, and it offers PHP developers an alternative to relying on simple "keyword" searching systems.
The OpenCA Project is a collaborative effort to develop a robust, full-featured and Open Source out-of-the-box Certification Authority implementing the most used protocols with full-strength cryptography world-wide. OpenCA is based on many Open-Source Projects. Among the supported software is OpenLDAP, OpenSSL, Apache Project, Apache mod_ssl.
TOra is a Toolkit for Oracle that helps the DBA or developer of a database application. It features an SQL worksheet with PL/SQL block parsing, a PL/SQL debugger and editor with syntax highlighting, a Schema browser, Unicode support, printing, and a full suite of DBA management tools.
QSD is a *nix daemon for administering game servers (like Quake, Half Life, etc). It uses a flexible plugin architecture for both authentication and for interfacing with the individual game servers. QSD has been designed from the ground up to relieve many problems game server admins deal with from day to day.
PostgreSQL BIND-9 SDB interface is an enhanced version of the original pgsqldb interface which is included with the BIND-9.1.3. This patch allows you to store all your zone data in a PostgreSQL database rather than in text files. This even makes changes visible immediately without restart/reload of the named server. It also includes PL/SQL functions and triggers to simplify reverse updates.