The sigslot library is a portable, type-safe, thread-safe implementation of the signal/slot paradigm written entirely as a C++ template library. No preprocessor is required. The library can coexist with other C++ libraries, notably the Microsoft Foundation Classes (MFC), adding Qt-like functionality to any suitably instrumented classes. The library should work fine with any reasonably standards compliant C++ compiler that supports the STL and templates with optional template parameters. Partial template specialisation is NOT required.
Felix is a programming language with a fully featured purely functional subsystem embedded in a a traditional Algol-like imperative programming system. The system features garbage collection, static typing, parametric polymorphism, overloading, regular expression matching, and a lot more. A scripting harness is used to invoke source files, but fully compiled binary shared libraries are generated, yielding both rapid prototyping and high performance. Seamless binding of C/C++ code makes interfacing existing libraries easy. Control inversion provides language-level cooperative multi-tasking.
The Template Numerical Toolkit (TNT) is a collection of interfaces and reference implementations of numerical objects useful for scientific computing in C++. The toolkit defines interfaces for basic data structures, such as multidimensional arrays and sparse matrices, commonly used in numerical applications. The goal of this package is to provide reusable software components that address many of the portability and maintenance problems with C++ code.