Sablotron is an XML toolkit which implements XSLT, DOM, and XPath. Sablotron is written in C++, and it can be used from C, Perl, Python, PHP, ObjectPascal, and via a command line interface. It supports the XSLT 1.0, XPath 1.0, and DOM Level 2 W3C specifications. It is designed to be as compact and portable as possible, and is maintained as an Open Source project by Ginger Alliance.
SISC is an extensible Java-based interpreter of the algorithmic language Scheme. It uses modern interpretation techniques and handily outperforms all existing Java interpreters (often by more than an order of magnitude). In addition, SISC is a complete implementation of the language. The entire R5RS Scheme standard is supported. This includes a full number tower including complex number support and arbitrary precision integers and floating point numbers, proper tail recursion, hygienic macros, and full support for first-class continuations (not just the escaping continuations found in many other systems).
SMTP::Server is a complete RFC 821 compliant mail server, written entirely in Perl. It's extremely extensible, and can easily be adapted to do things like SPAM/RBL filtering, and it's portable to all major platforms, including Win32. The SMTP::Server architecture was written to be very flexible, and its true power comes from the ability to extend/customize its functionality with plugin modules, or Perl code.
The State Threads is a small application library which provides a foundation for writing fast and highly scalable Internet applications (such as Web servers, proxy servers, mail transfer agents, etc.) on UNIX-like platforms. It offers a threading API for structuring a network application as an event-driven state machine.
Microwindows is an Open Source project aimed at bringing the features of modern graphical windowing environments to smaller devices and platforms. Microwindows allows applications to be built and tested on the Linux desktop, as well as cross-compiled for the target device. Microwindows' genesis was with the NanoGUI project, and has now been combined into a single distribution. The Win32/WinCE API implementation is known as Microwindows, and the Xlib-like API implementation is known as Nano-X.
Tinderbox allows developers and management to see at a glance what is currently going on in all aspects of the development process. The Tinderbox server prepares HTML pages which display the history of many different development variables. It shows at a glance the history of whether the source code builds and passes all automated tests, who has checked code changes into the version control system, whether the source tree is open or closed and when the state of the tree last changed, what trouble tickets have been closed, and the notices and messages posted by the developers or project manager.