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.
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.