zlacker

For the most part it was great (IMO), and has some features I still miss in all other editors, like the automatic side-by-side toggling, using mouse gestures (on Apple's mouse) to go back / forward in history just like Safari, etc.

The most friction came from merging (e.g. when files were changed or project config was changed), due to xcode's insistence on having a project file listing all files etc. The other friction was in the annual update cycle of both xcode and the apps we built.

But the last time I tried xcode it was pretty bad; on paper the new UI coding approach is great, but in practice the live preview was so tempramental and crashed so often it was barely usable.