1T3XT offers a suite of products that are useful to create and/or manipulate documents, more specifically PDF and RTF documents. There's some support for XML and HTML, but this isn't the core business of iText.
LibUtillery is a container for more or less unrelated utility libraries, providing functionality that is often required in both small and medium-sized software, which otherwise tends to be re-written over and over again.
The library provides a highly portable programmer's toolbox, either as-is or as a relatively easy to use code repository. It is designed to work on all kinds of modern and older flavors of Unix, as well as Microsoft Windows. Apart from requiring the "long long" integer type in one function, it is expected to be compatible with ISO C90.
Most of LibUtillery's sub-libraries could be considered a "class" that can be instantiated multiple times within a program most of the time.
Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems, each with its own display, without special hardware. It's intended for users with multiple computers on their desk since each system uses its own monitor(s).
whaw is a program for X11 that can use advanced tiling algorithms and an intuitive user interface to quickly lay out windows without having to replace or modify the set up of your window manager of choice. whaw is meant to augment the capabilities of your current window manager, not supplant them.
NILFS is a log-structured file system supporting versioning of an entire file system and continuous snapshotting that allows users to restore files mistakenly overwritten or destroyed a while ago.
Processing is an open source programming language and environment for people who want to program images, animation, and interactions. It is used by students, artists, designers, researchers, and hobbyists for learning, prototyping, and production. It is created to teach fundamentals of computer programming within a visual context and to serve as a software sketchbook and professional production tool. Processing is an alternative to proprietary software tools in the same domain.
Processing is free to download and available for GNU/Linux, Mac OS X, and Windows.