Spring is a lightweight Java/J2EE application framework based on code published in "Expert One-on-One J2EE Design and Development" by Rod Johnson. It includes powerful JavaBeans-based configuration management applying Inversion-of-Control principles, a generic abstraction layer for transaction management allowing for pluggable transaction managers, a JDBC abstraction layer, integration with Hibernate, JDO, Apache OJB, and iBATIS SQL Maps, AOP functionality, and a flexible MVC Web application framework with multiple view technologies. There is also a .NET port available.
Wolf CMS simplifies content management by offering an elegant user interface, flexible templating per page, simple user management and permissions, and the tools necessary for file management. It is a fork of Frog CMS, which was itself a PHP migration of the Ruby-on-Rails app Radiant CMS. Wolf is now forging its own development path, although a family resemblance with these two systems can still be seen.
Schoorbs is a system to make room and resource bookings through a Web 2.0 GUI. You can also interact with it through a REST API. It allows you to book rooms and resources grouped by areas. Activity can be logged via a simple logging interface. The code is automatically tested by several unit tests. The interface can easily be styled through the usage of a template system. Schoorbs produces valid XHTML 1.1 output, has packages for Debian and Ubuntu, and is well documented online.
Kahua is a continuation passing style (CPS) application framework and server. It is written using the Gauche implementation of Scheme. It has the advantage that you can use "continuations" easily, so you can solve the typical Web application's problem of process disconnection. It allows you to program declaratively by using S-expressions as a fundamental data type, you can use Kahua's Object Database to persist data, and you can modify the function being run, supporting incremental development.
elRTE is a WYSIWYG HTML editor for the Web written using jQuery. It features rich text editing, options for changing its appearance and style, insertion and management of various HTML elements with formatting (images, tables, lists, etc.), support for viewing and editing HTML code, and normal and full-screen modes.
The CryptoNAS project wants to bring data encryption to the masses. It provides two packages: CryptoNAS-Server and CryptoNAS-CD. The CryptoNAS-Server package adds hard disk encryption to a file server (running Samba, NFS, DAV, etc.) without annoying its users. The CryptoNAS-CD is targeted at users who want to set up an encrypting file server without bothering about complicated administration issues.