[rcchen]

I would say that it's at 90+ percent feature parity with ST3; the only real downside is that the package/extension ecosystem is nowhere near as mature as with ST3 right now, but that looks like it is changing very quickly. In addition, ST3 is closed source vs. Atom is open source, and that alone could be a good reason for a number of people to switch.

My recommendation is to give Atom a chance, see if it fits into your workflow (whether it has native support for the languages/frameworks you work in, or if packages exist). If it works out, then you have a viable alternative to ST3 :)

[jdc0589]

the package ecosystem isn't on par yet, but the package DEVELOPMENT ecosystem far surpasses sublime in every way imaginable.

I really did not enjoy writing plugins for sublime. The development/debugging/testing experience isn't especially pleasant.

[zzleeper]

Agreed with the last bit. I wrote a few plugins and it drove me insane. Maybe it's the lack of tutorials or sparse documentation.

That said, the new features (.sublime-syntax files instead of TM files, etc.) look very refreshing.