U++ is a C++ cross-platform rapid application development suite focused on programmers' productivity without sacrificing runtime performance. Based on strictly deterministic design, it provides a viable alternative to garbage-collected platforms, even for business logic oriented problems.
TinyaML is a virtual machine, a compiler, and a compiler- compiler, powered by the abstract parser tinyap. It is endian-safe and allows easy bindings of new C APIs into the virtual machine. The VM executes wordcode with a virtual threading model and features a garbage collector. TinyaML allows the user to compile and run assembly code, or plug new grammars for higher-level languages into the parser and implement the methods to compile their ASTs.
MCU 8051 IDE is a fully featured integrated development enviroment for MCS-51 based microcontrollers. It consists of a compiler, an advanced text editor (with highlighting, validation, and completion), a simulator, a scientific calculator, a hex editor, and many other things. Currently, this program supports only assembly language and a few microcontrollers.
python-ptrace is a debugger using ptrace written in Python. It's able to control multiple processes, read/write bytes, perform breakpoint and step by step execution, use a disassembler, syscall tracer, and parser, explain why a signal is raised, dump registers, stack, and memory mappings, etc.
The SimulAVR program is a simulator for the Atmel AVR family of microcontrollers (ATtiny and ATmega). SimulAVR can be used either standalone or as a remote target for avr-gdb. There are interfaces for Python and Tcl. When used in gdbserver mode, the simulator is used as a back-end so that avr-gdb can be used as a source level debugger for AVR programs.