Am I Responsive »
Preview your site on 4 different viewports (desktop, laptop, tablet, mobile)
Android Design Guide »
Official Android design guidelines
Android Patterns »
Official Android pattern descriptions
Beautiful Web Type »
Showcase of the best typefaces from the Google web fonts directory
Bootstrap »
Front-end framework for responsive websites
Call To Idea »
Collection of app and web component examples
Color Picker »
Fun interactive way of picking colors and creating color palettes
Designspiration »
Design inspirations across digital, print, interior, photography and more
Dribbble »
Show and tell for designers
Emmet »
Chrome extension to find responsive design breakpoints and create views for each
Favicon Generator »
Generate multi-platform favicon pictures and HTML
Find Guidelines »
Links to official brand guidelines of popular online brands
Font Awesome »
Large icon font fully customizable via CSS
Font Squirrel »
Free fonts for commercial use
Font Squirrel Web Font Generator »
Convert and create fonts for @font-face
Fonts In Use »
Archive of typography indexed by typeface, format, and industry
Foundation »
Responsive front-end framework
Google Design »
Google's entry point to design across all platforms
Google Fonts »
636 free to use font families and counting
Google Material »
Google's Material design guidelines
Google Material »
Google Material color swatches for Illustrator/Photoshop and themes for Illustrator
Google Roboto »
Google's Roboto font
Google Typography »
Google's typography guidelines
Gratisography »
Free high-resolution pictures that can be used on personal or commercial projects
Grid Based »
Showcase of grid-based sites
Grid Calculator »
Create and download grids for Illustrator or Photoshop
GuideGuide »
Photoshop extension to simplify guide and grid creation
IcoMoon App »
Create SVG's, PNG's, or custom fonts from 4600+ icons
Information Is Beautiful »
Beautiful, interesting and useful visualizations, infographics and diagrams
iOS 7 UI Transition Guide »
Official guide for app transitions from iOS 6 to iOS 7
iOS Design Cheat Sheet »
Resolutions, icon sizes, element sizes, and typography info for iOS 7
iOS Human Interface Guidelines »
Official iOS interface guidelines
Linea »
A free outline iconset featuring 730+ Icons
Little Big Details »
Collection of the finer details of design
Logoed »
(Mostly minimalist/simple) logos
Mapsicons »
Country maps in 11 sizes or as SVG
Media Queries »
Inspirational websites using media queries and responsive web design
MinimalSites »
Showcase of minimalist sites
Mobile Design Pattern Gallery »
Flickr collection of mobile design patterns
Modern.IE »
Get screenshots of how your site looks on several different browsers and devices
Nice Portfolio »
Curated showcase of design portfolios on the web
One Div »
Icons in pure CSS and one HTML div
One Page Love »
One Page Website Designs
Pttrns »
iPhone and iPad user interface patterns
Responsive Patterns »
Patterns and modules for responsive designs
Screen Siz.es »
Screen specifications of the most popular devices and monitors
Service Design Toolkit »
Workshop materials, posters, manuals, and technique cards for service design
Service Design Tools »
Communication methods for the design process
siteInspire »
Showcase of sites by styles, types and subjects
Stylify Me »
Create a quick overview of a site's CSS styles including colors, fonts, sizing and spacing
Swissted »
Vintage music show flyers redesigned into international style posters
The Noun Project »
Large collection of free and paid-for icons
The Stocks »
Several royalty free stock photo options in one place
Typ.io »
Curated examples of web font combinations
Type Sample »
Identify and sample web fonts via bookmarklet or Chrome extension
Typewolf »
Web Typography examples + background and similar font recommendations
UI Animations »
User interface animations
UI Faces »
Free sample avatars for UI mockups
Unsplash »
Free (do whatever you want) hi-resolution photos, 10 new photos every 10 days
Use Your Interface »
Transitional interface animations
User Onboarding »
Step by step analysis of user onboarding implementations
UX Archive »
iOS user flows for different tasks
WhatFont »
Chrome extension to identify any web font with a simple click
Windows 8 Templates »
Microsoft's assets for Photoshop, Illustrator, Powerpoint, Balsamiq
Windows 8 UX Guidelines »
Official Windows 8 UI guidelines (PDF)
Workmark.it »
View all installed fonts in your browser