Grapple is designed to be a simple network layer, allowing the addition of multiuser features to an application for as little as a dozen lines of code. However, it also allows for more. It features simple client-server networking that keeps all clients aware of all other clients, passworded servers, and data transfer via TCP, UDP, or reliable UDP. Advanced features include network messaging via push, pull, or a combination, multiple methods of querying users, user groups for client bandwidth saving, network load reacting data transmission and retransmission, background pinging to monitor network states, server failover, and a fully functional lobby system.
QP is a family of lightweight and portable frameworks for modeling and coding UML state machines in C or C++. Designed for real-time embedded systems, QP can replace an RTOS or work with one. It has been ported to many MCUs (ARM Cortex-M3/M0, ARM7/9, MSP430, TMS320C28x, AVR, PIC18/PIC24/dsPIC, M16C/R8C, H8, 68HC08, ColdFire, PSoC, NiosII, 8051/80251, PSoC) and OSs (Linux/POSIX, Win32, VxWorks, QNX, ThreadX, uC/OS-II).