Thanks for featuring Frontify in this post. We do also have a powerful Sketch Integration see (https://frontify.com/sketch) to synch Artboard, host Sketch source files but also work with colors, typography and more definitions pulled out of the guidelines.
Bravo Caryn! There are not enough articles that show the thought process and the outcomes around good UX. Too many people spouting about theory and methods. Really appreciate the thought and examples you shared which who REAL work not just chatter.
Cheers! (And many claps.)