Ask DN: What do you use to Spec your designs?

over 8 years ago from , Web Designer, TrainerRoad

I'm working on a big UI project where I need to spec all of my work for developers to include colors, spacing, etc. I've seen a tool or two fly through my product hunt feed before, but can't seem to find them anymore. Wondering what everyone else is using, or if they just develop their own systems in sketch, ps, etc.