- DocHub - Fast search inside of documentations: PHP, Python, jQuery and MDN for JavaScript, CSS and HTML
- HTML5 Web Developer Edition
- The Web platform: Browser technologies - huge linklist for all modern webtechniques
- Übersicht über HTML5-Spezifikationen und -Literatur - German
- Annotated ECMAScript 5.1
- HTML5Doctor - Element index
- CSS3-Files
- The Current State of HTML5-Forms - All new form-types and attributes are documented and constantly tested in the browsers if and why the new techniques are implemented.
- HTML5Doctor
- HTML5rocks
- The Shapes of CSS - Build hearts and other shapes only with CSS.
- CSS-101 Basic informations about CSS with little tests.
- CSS-Discuss Wiki - Wiki of the internationally used mailing-list "css-discuss".
- Reine Formsache - German - Umfangreiche Darstellung über die wichtigsten Aspekte der Erstellung und Gestaltung von Formularen
- All about floats
- HTML5 & CSS3 Fundamentals: Development for Absolute Beginners - 21 videos from Microsoft about frontend development.
- Learn CSS Layout
- Web Do's and Don'ts
- An Advanced Guide to HTML & CSS
- Eloquent JavaScript
- Einführung in JavaScript - German
- Die Grundlagen von JavaScript - German
- Learning JavaScript Design Patterns
- JavaScript For Cats
- JavaScript Guide - Basic tutorials by Mozilla.
- Javascript Fundamentals: Development for Absolute Beginners - 21 tutorial videos by Microsoft.
- html5shiv - Enables the new HTML5 elements in IE < 9
- Prefix Free - Automatic vendor prefixes for CSS3
- HTML5 Cross Browser Polyfills
- JSWiki - huge linklist
- jQuery Fundamentals
- jQuery Selectors - test all the possible jQuery selectors on one page
- jQAPI - Alternative jQuery Documentation
- Commonly Confused Bits Of jQuery
- Yahoo! Accessibiliy Blog
- Yahoo! Accessibility Library
- WCAG 2.0
- WCAG2 Techniques
- Using WAI-ARIA in HTML
- The Accessibility Project
- WCAG Cheat Sheet
- WCAG 2 Quick Reference
- HTML5Accessibility
- This is responsive - patterns, resources, news
- MQtest.io - A simple tool to help identify which media queries your device responds to.
- Palm Reader - Showing what @media features your device can and can't see
- Device pixel density tests
- Introduction to Filters and Transitions - Dive into the early ideas of CSS3, as they still were IE-specific filters. They can help you mimic CSS3 for oldIE
- Webkit CSS properties - all webkit-specific CSS-properties with explanatory pages
- Webkit Extensions - all webkit-specific CSS-properties with explanatory pages
- Mozilla CSS Extensions - all Mozilla-specific CSS-properties with explanations
- CSS Compatibility and Internet Explorer - Which properties does IE support since which version? First-hand informations from Microsoft
- webbrowsercompatibility.com - Compatibility tables showing support for front-end technologies in web browsers
- Browserhacks.com - extensive list of hacks and filters to separate browsers regarding version numbers
- New form features in HTML5
- Profiling CSS for fun and profit - Detailed analysis of the performance aspects of CSS3-properties.
- What the Heck is Shadow DOM?
- @font-face gotchas
- CSS-Tricks
- Smashingmagazine
- Peter Kröner - German
- When can I use... - Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.
- The Current State of HTML5 Forms - Browser support for the different features of HTML5 forms
- ECMAScript 5 compatibility table
- CSS3 Click-chart
- HTML5please
- MobileHTML5.org - Which feature is supported from which mobile device?
- HTML5 Security Cheatsheet
- HTML5 Canvas Cheat Sheet
- Animatable Properties - Which properties can be animated with CSS3?
- css3.mikeplate.com - border-radius, box-shadow, text-shadow, transforms, columns, gradients, border, outline, multiple backgrounds
- CSS3Maker - border-radius, gradients, transforms, animations, transition, rgba, text-shadow, box-shadow, text-rotation, @font-face
- CSS3 Animations
- Colorzilla Gradient Editor - Create your gradients just like your browser and grab the code. The tool produces the final W3C-syntax and can create filters for the older IE and an SVG for IE9.
- i2Style - create buttons with CSS3 inside your browser with ease
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jsFiddle - CSS-/JS-sandbox
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Dabblet - CSS-sandbox
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JSBin - CSS-/JS-sandbox - livecoding
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Codepen - CSS-/JS-sandbox - livecoding
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CSS-Selectors - test the new CSS3-selectors with an example-text
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CSS3 structural pseudo-class selector tester - testing the new pseudoclasses :nth-child, :nth-last-child, :nth-of-type and :nth-last-of-type
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DataURI-converter - Drag an image inside your browser and grab the data-uri. Unfortunataly this technique doesn't work in IE preceding version 8.
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rgab-argb-converter - Convert rgba to a hex-color that you can insert into an IE-filter.
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Nice Entity - Quick References of Most Common Entities
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csscss - find redundant rules in your CSS
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Emmet - the former zen-coding helps you coding faster in your editor or IDE
- Principles of writing consistent, idiomatic JavaScript
- Principles of writing consistent, idiomatic CSS
- Front-end Code Standards & Best Practices
- Front end styleguides and pattern libraries - very extensive list
- HTML 5 Demos and Examples
- HTML5 - Information and samples for HTML5 and related APIs
- CSS3 - Information and samples
- DOCTYPEhtml.net HTML5- and CSS3-Demos
- isithackday (experiments by Chris Heilmann)
- Demos and Experiments by Mozilla
- ZURB Playground
- The Web rocks! - Demos made by Chris Heilmann
- html5-demos.appspot.com
- Book of speed
- Faster Websites: Crash Course on Web Performance
- Web Performance 101: An opinionated guide to the 22 links every developer should read
- 14 Rules for Faster-Loading Web Sites
- Ladezeitenoptimierung - German
- Sass - project page
- Compass - project page
- Compass Reference Browser
- Better Sass Docs
- Stitch - a CSS pattern framework for Compass
- Bourbon - collection of mixins
- Zocial - CSS3 buttons
- Sassy buttons
- Font-icons - Compass font-icons generator
- Sassmeister - convert Sass into CSS online for demo purposes
- Presentation of Chris Eppstein about technical details of Sass and Compass
- We love Iconfonts
- Font Custom - Generate custom icon webfonts from the comfort of the command line.
- Fontello - icon fonts generator
- FontSquirrel
- The League of Moveable Type
- IcoMoon - Browse and select icons to download them or make a font. You may import SVG images or fonts too.