BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.
Classfile Reader & Writer is a Java package that makes it easy to read and write Java class files. It does not provide any help with displaying the contents of a class file (besides debug output) or disassembe the byte codes, but can read "obfuscated" class files such as those generated by Crema.
The National Space Science Data Center's (NSSDC) Common Data Format (CDF) is a self-describing data abstraction for the storage and manipulation of multidimensional data in a platform- and discipline-independent fashion. It consists of a scientific data management package (known as the "CDF Library") that allows programmers and application developers to manage and manipulate scalar, vector, and multi-dimensional data arrays.
Construct is a Python library for declaratively defined data structures, called "constructs". These constructs can both parse data into an object and build an object into data. Constructs handle fields of either byte or bit granularity, structs, unions, sequences, repeaters, adapters, validators, switching, pointers, on-demand (lazy) parsing, and many more. The library defines a large number of primitive constructs, as well a large inventory of file formats and network protocols.
Daemonisation with Feedback is a set of functions which simplifies the development of applications that should operate as daemons. The functions support notification from the daemon (whether the daemon startup completed successfully) back to the parent process. At the debugging stage, the daemonization can be switched off via a compiler option.