Here are best free Photoshop plugins for designers and developers that can help you speed up your workflow when you design and build websites. Hopefully you can use some of them.
Griddify
Griddify is tiny and fast. It helps you compose custom grid systems, vertical rhythm, and do a bunch of other stuff with guides in photoshop.
Size Marks
Size Marks is a helpful Photoshop script for web designers and front-end engineers.
Welositey
Velositey is a full featured, open source Photoshop extension that creates all the boring stuff for you, so you can focus on styling your website.
Random User
These users can be used as placeholders in web mockups, and will save you time from creating your own placeholder information.
Kaku
A simple Photoshop plugin to translate your text layers to a different language.
LiveShare PS
With LiveShare PS you can now broadcast any Photoshop document to as many people as you want through an instant LiveShare meeting.
LayerCraft
A Photoshop plugin to export UI assets from layers.
Ink
Ink is a plugin that helps you providing few extra important informations about your mockups by documenting your layers, from typography to effects and shape sizes.
Modular Grid Pattern
Modular Grid Pattern is application for web designers, which helps you quickly and easily to create a modular grid in Adobe Photoshop.
Photoshop Social Shar
Photoshop Social Share Panel Plugin is a lovely-designed & free Photoshop plugin, helping designers share their designs.
pngquant
It provides PNG saving better than Save for Web. Typically creates PNG files 60-70% smaller than 24/32-bit PNG from Save for Web, and unlike 8-bit PNG from Photoshop, always supports semi-transparent alpha channel.
Bounce
Bounce is a free extension that integrates and connects the Dribbble design community into the Adobe design applications you love to build with everyday.
Retinize It
The best Photoshop actions for preparing designs for iOS or optimized for Retina-display websites.
Free photoshop script: Export your vector layers from PS to SVG in a single click!
This script, once activated, exports all vector layers named with “.svg” at the end of the layer name as SVG files, along with their shape and color attribute. No more slicing SVGs one by one like a caveman.
Lighten / Darken Color (Script)
While working on one project I came up with a small script that helps dealing with color in Photoshop, thought that it can be useful for someone else, so I decided to share it here.
Corner Editor
Judging from the teaser preview of CS7, it appears that this type of funtionality will be included in the newest version, but in the meantime, this is a great add-on and will continue to be very useful for versions of Photoshop earlier than CS7.
Group Layer Renaming (Script)
Should be useful if you are layer organization geek or if you use applications like Slicy or new Photoshop CC feature called Image Assets, that can export layers using tags in their names.
Realsizer
Photoshop script for mobile UI designer to display your designs at real size on computer monitor, and real size printing.
Transform Each Beta (Script)
Adobe Illustrator has nice features that I miss in Photoshop. One of them is Transform Each. When you need to transform group of layers, it transforms each of selected layers as it was transformed individually.
12 New Photoshop Tools for CS6
It is a Photoshop panel with twelve incredibly useful tools that I use on a daily basis.
Free Lorem Ipsum Generator
The best Lorem Ipsum generator plugin for Photoshop, Illustrator, InDesign & Dreamweaver.
