Regardless of how silly “serverless” still sounds to me, the model is fantastic for deploying both websites and APIs. Retcon probably launched months sooner because of that.
I have deep love for all of Panic's work. Nova is no exception, and whenever I need to do Web work, it's gladly that I open Nova. Its flexible splits and custom tasks are hard to do without whenever I find myself in a different IDE.
Retcon is a native macOS app, with great respect for the platform's strengths and conventions. Sketch seems to share these same values, and is an app I keep referring to when designing Retcon's UI—in addition to using it to design the UI proper, of course.