Brackets was quite nice for what it can do out of the box, but I found the community support very poor, so there's really not much more than that it can do.

LightTable was a clever idea that never quite fit my workflow, and which as far as I can tell is basically dead. The creators have abandoned it, and the surviving maintainer support is of the "pull requests welcome" variety. There are glaring bugs in basic features like inline eval, and maintainer response was a combination of "eh, we're cutting that feature anyway" and "fix it yourself."

Sure as hell doesn't give me any hope that this "Eve" thing their hyping is anything but smoke and mirrors.