The Machine Objects class library allows the creation of state machines based on the "State" design pattern in straight C++. It extends the pattern with the option to create hierarchical state machines, making it possible to convert the popular UML statechart notation to working code in a straightforward way. Other features are entry and exit actions, state histories, and state variables.
C++ Resources Compiler is a tool that will generate a C++ source file (along with the corresponding header file) that embeds any given data file and provides a Resource class which gives access to this data. The Resource class can be created in two flavors: one using STL streams, the other using WxWidgets streams. Its function is similar to that of the "qtrc" tool from the Qt toolkit.
C-Pluff is a plug-in framework for C programs. It has been strongly inspired by the Java plug-in framework in Eclipse. C-Pluff focuses on providing core services for plug-in interaction and plug-in management. It aims to be platform neutral and supports dynamic changes to plug-in configuration without stopping the whole application or framework. It does not yet provide special facilities for distribution such as signed plug-in packages or remote plug-in repositories, but it is possible to build such features on top of the current framework.
CDuce is a programming language adapted to writing safe and efficient applications that manipulate XML documents. A type system checks at compile time that applications deal with all the possible inputs and produce only valid outputs. Pattern matching is a powerful operation based on regular expressions to inspect documents. CDuce also features general-purpose features; it is a higher-order functional language, with a type-safe interface with Objective Caml.
CGILua is a tool for developing dynamic HTML pages and manipulating input data from forms. It uses the interpreted language Lua for codifying its scripts. It has been on the road for almost 8 years now, being used in many Web products and sites. It is extensible through Lua libraries and dynamic loading of C/C++ libraries. Scripts can be written as Lua programs or HTML templates (HTML with Lua code embedded). Scripts are platform-independent.