wyoGuide is a tutorial, a collection of guidelines for building cross-platform applications with a well-designed, consistent look and feel. It gives ideas and advice on how an application and its GUI could and should be written. Development with these guidelines gives the GUI of an application a standard set of base functionality. wyoGuide also provides sample code for each guideline written in C++ using the wxWidgets (formerly wxWindows) framework. For a seasoned developer it shouldn't be difficult to adapt these guidelines to other languages or frameworks.
Sglib is a generic library for C that was inspired by the Standard Template Library from C++. It consists of a single header file and no binary code. It defines useful macros for sorting arrays and manipulating lists, sorted lists, double linked lists, hashed containers, and red-black trees. Macros are parametrized by the type of the data structure. The library does not enforce its own data representation, but acts on user-defined types. It does not enforce any particular memory management system.
Daikon is an implementation of dynamic detection of likely invariants. An invariant is a property (such as "x=2*y+5" or "this.next.prev = this" or "myarray is sorted by <") that holds at a certain point or points in a program. Invariants are often seen in assert statements, documentation, and formal specifications. Invariants can be useful in program understanding and a host of other applications. Daikon runs a program, observes the values that the program computes, and then reports properties that were true over the observed executions. It can detect properties in Java, C, C++, Perl, and IOA programs, in spreadsheet files, and in other data sources.