Brent Simmons reminiscing about Frontier and why modern development environments aren’t as good:

I’m not saying apps these days need to be Frontier-like in any details. But it seems absolutely bizarre to me that we — we who write Mac and iOS apps — still have to build and run the app, make changes, build and run the app, and so on, all day long. In the year 2025.

I also used Frontier a lot during that time. It was great. Personally, instead of Swift, I would’ve loved to see RubyCocoa taken to the next level. And with React Native we do have some of the quick iteration Brent blogs about.