Joda-Time provides a quality replacement for the Java date and time classes. The design allows for multiple calendar systems, while still providing a simple API. The 'default' calendar is the ISO8601 standard which is used by XML. The Gregorian, Julian, Buddhist, Coptic and Ethiopic systems are also included, and we welcome further additions. Supporting classes include time zone, duration, format and parsing....

GNU nano is designed to be a free replacement for the Pico text editor, part of the Pine email suite from The University of Washington. It aims to "emulate Pico as closely as possible and perhaps include extra functionality".

The Bug Genie is a user-friendly and powerful web-based (PHP5) bug tracker/bug tracking tool with features such as project management, SVN integration, publishing tools, messaging, calendar and more. Ready to use out-of-the-box, and easy to install.

rxvt-unicode is a modern, Unicode-aware color xterm replacement that uses significantly less memory than a conventional xterm and many other Unicode supporting terminal emulators.

It supports using multiple fonts at the same time, including Xft fonts, and client-server technology to reduce memory consumption when using multiple windows....

Aptitude's goal is to be a highly configurable console frontend for the Debian Advanced Package Tool, based heavily on hierarchical display of information about packages.

OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features. There is currently an effort underway to replace the original, not free (as in no freedom), graphics with new original Free (as in freedom) content....

OpenLDAP Software is the premier open source implementation of the Lightweight Directory Access Protocol. It is the most reliable and standards-compliant. Since 2005 it has been the world's fastest; it is the gold standard against which all other directory software is compared....

XAMPP is an easy to (optionally) install Apache distribution containing MySQL, PHP and Perl. XAMPP is really very easy to install and to use - just download, extract and start.

This includes XAMPP Lite, an additional extra small XAMPP edition. It's the successor of the old MiniXAMPP....

CruiseControl.NET is automated continuous integration server for the .NET platform. It is a C# port of CruiseControl for Java.

TortoiseHg is a shell extension of Mercurial SCM (Hg) for the MS-Windows Explorer.

It is cross-platform and works under Linux too.