How could we forget this one! A simple Photoshop extension that creates guides and grids super fast and way easier than one at a time. And it's completely free!

For you Photoshop users out there... no one really likes to lay out stuff in Photoshop right? (compared to Indesign it's just so much harder) but when you have no choice, keep this plug-in handy! It lets you create margins and guides in Photoshop~ It's extremely easy to install and use :)

After many hours spent meticulously nudging nav elements and building grids for layout in web comps, I began to wonder why Photoshop didn’t have a grid tool like InDesign. At a certain point I decided to stop thinking about it and just build a tool to do it for me.

This is the best!