Figma is web-based, surprisingly high performance (it's written in C++ I believe, and compiled to web assembly), and is roughly on-par with Sketch feature-wise.

Figma is web-based, surprisingly high performance (it's written in C++ I believe, and compiled to web assembly), and is roughly on-par with Sketch feature-wise. The ecosystem isn't as rich, and it probably falls short in some areas whilst being better than offers.