Seed7 is a general purpose programming language. It is a higher level language compared to Ada, C++, and Java. In Seed7, new statements and operators can be declared easily. Functions with type results and type parameters are more elegant than a template or generics concept. Object orientation is used when it brings advantages and not in places when other solutions are more obvious. Although Seed7 contains several concepts of other programming languages, it is generally not considered as a direct descendant of any other programming language.
GTK, which stands for the Gimp ToolKit, is a library for creating graphical user interfaces. It is designed to be small and efficient, but still flexible enough to allow the programmer freedom in the interfaces created. GTK provides some unique features over standard widget libraries.
omega is a complex rogue-style game of dungeon exploration. Unlike other such games, there are a number of ways to "win", depending on various actions taken during play. The ways you can get your name on the hiscore board include becoming the highest ranked head of a guild, sect, college, etc., as well as gaining the most points figured from possessions and experience. The game (via the oracle) may impose some structure on your exploration, but you need not follow all of the oracle's advice. There *is* a "total winner" status, by the way.
OpenXAdES enables people to work with legally-binding digital signatures (primarily giving and verifying them). Legislation often defines a set of requirements that legal digital signature technologies and infrastructures must be compliant with, and OpenXAdES aims at meeting many, if not all, such requirements from different legislations.
YAJOGLB (Yet Another Java OpenGL Binding) allows Java programmers to access their native OpenGL library. The library is implemented using Java's JAWT to access the native windowing system, along with JNI calls to OpenGL. Programs using the binding must use the shared library provided, since this is not a pure Java library.
Cocom is a toolset that is oriented towards the creation of compilers, cross-compilers, interpreters, and other language processors. It consists of reusable packages (collection and memory management framework), a Sprut internal representation description (AST-to-AST) translator, a Nona code selector description translator (generator generator similiar to BEG, Twig, Burg, and Iburg), an MSTA syntax description translator (yacc-compatible parser with better error reporting), an OKA pipeline hazards description translator, and SHILKA keywords description translator (similiar to gperf but faster).