libqt4jon is a JSON serializer and deserializer that works with the Qt QVariant object. It can serialize primitives like integer, double, QString, lists, maps, and QObject * recursively. It serializes only properties declared with the QObject * Q_PROPERTY macro. It based on the json-c parser.
libqt4report is a library for Qt 4 that creates database report from an XML description. It is able to validate the XML file from an XSD schema, print the report directly, or generate SVG files. Calculations are performed by QScriptEngine. It can group data according to the result field value, calculate totals, and display images.
QP Active Object Frameworks is a family of event-driven, RTOS-like, active object frameworks for microcontrollers. The QP frameworks provide thread-safe execution of active objects (concurrent state machines) and support both manual and automatic coding of UML statecharts in readable, production-quality C or C++. Automatic code generation of QP code is supported by the free QM modeling tool. The QP family consists of QP/C, QP/C++, and QP-nano frameworks, which are all professionally developed, strictly quality controlled, well documented, MISRA-compliant, and commercially licensable. All QP frameworks can run on "bare metal", completely replacing a traditional RTOS. Ports and ready-to-use examples are provided for Cortex-M3, Cortex-M4, Cortex-M0, RX600, MSP430, C28x, C55x, AVR, ARM7, ARM9, ColdFire, PIC24, dsPIC, M16C/R8C, H8, HC08, 8051, Arduino, and mbed. QP/C and QP/C++ can also work with a traditional (RT)OS such as POSIX (Linux, QNX), Windows, VxWorks, ThreadX, uC/OS, or FreeRTOS.
GRALE is a set of tools - a library and a number of accompanying applications - to study gravitational lenses. Gravitational lenses are astronomical objects so massive that their gravitational pull even deflects light rays. This can cause multiple copies of the same background object to be visible, like a cosmic mirage. The locations and shapes of these copies can provide information about the mass distribution of the gravitational lens, which GRALE can help recover using a genetic algorithm-based method. Apart from these so-called lens inversions, it's also possible to simulate gravitational lenses.
FeatureC++ is a C++ language extension that supports Feature-Oriented Programming (FOP). FOP studies feature modularity in program families. The idea of FOP is to build software by composing features. Features are basic building blocks that satisfy intuitive user-formulated requirements on the software system. Features refine other features incrementally. This step-wise refinement leads to a layered stack of features. Mixin Layers are one appropriate technique for implementing features.