I am not familiar with those. But I will offer a general comment: most vendors completely miss the boat as to the code they provide. What I'm looking for is a

I am not familiar with those. But I will offer a general comment: most vendors completely miss the boat as to the code they provide. What I'm looking for is a way to quickly build numerous applications which will be maintained for a long time. To really utilize the microcontroller I will need to get low-level anyway, so there is no point in "high-level abstractions": they always come back and bite you in the end. Give me libraries, but make them low-level libraries, and maintain them well. Give me a way to easily upgrade those libraries in my projects (e.g. code templates, code generated from an IDE are no-nos). Don't give me a "universal abstraction layer for cross-device portability". Give me good bootloaders, clock management libraries, simple APIs for switching energy modes, low-level libraries for comms. So far I found nothing of the kind, which is sad. I think it's one of the reasons the software world is really lagging behind the hardware.