https://www.popularmechanics.com/technology/how-to/g1426/arduino-alternatives-5-microcontrollers-you-should-know/

Even if you're a casual microcontroller dabbler you've probably heard of the biggest names in the business: Arduino, BeagleBone, and Raspberry Pi. However, there are less renowned but still high-quality microcontrollers that you may have missed but should get to know.