awesome-less

Brings designing by relative visual weight, or designing with color schemes, to Bootstrap

Ant Design

An enterprise-class UI design language and React-based implementation

Bootstrap a11y theme

Makes web accessibility easier for Bootstrap developers

Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web

Collection of free themes for Bootstrap

Small "mobile first" CSS framework for front-end developers who build responsive web applications

CSSHórus

Library for development of responsive and mobile websites

Theme and framework for Bootstrap

Theme framework that can be used as a standalone website builder or to create WordPress themes

Less Rails

Less for Rails

Material Design for Bootstrap

Material Design for Bootstrap is a Bootstrap V3 compatible theme; it is an easy way to use the new Material Design guidelines by Google in your Bootstrap 3 based application

Set of styles to create a site with an interface similar to Windows 8

Light, responsive, and lean frontend UI framework

UI component framework based around useful principles from natural language

Lightweight and modular front-end framework for developing web interfaces

Lightweight front-end framework for logically building complex, responsive web projects

Bootstrap Grid Only

Bootstrap's responsive grid and responsive utility classes only, without any extras. Lightweight yet still powerful. Style to taste

Framework

Less Framework is a CSS grid system for designing adaptive web sites. It contains 4 layouts and 3 sets of typography presets, all based on a single grid

This framework will let you create your web applications in a flexible way that you've never experienced before

Fluidable is a mobile first, responsive grid system. It is standalone, lightweight & built using Less

Grid System

Super-easy to use, markup-independent grid system

Less Zen Grid

Implementation of in Less

Order.Less

Baseline alignment, column grids and modular scales

CSS and Media Query Strategies

Using Less CSS to develop a media query driven solution for modern and legacy browsers

Media Queries Library

Really simple media queries in Less

Media Query to Type

A method for creating an IE specific stylesheet that allows the content of media queries to become accessible to Internet Explorer 8 and below

1100+ collection of popular brand colors available in Sass, Less, Stylus and CSS

Variables for easier color manipulation while you design in the browser

Open Color

Open color is a color scheme for UI design. Available in CSS, SCSS, Less, Stylus, Adobe library, Photoshop/Illustrator swatches and Sketch palette

Animate

A library of CSS3 keyframe animations authored using Less

Animate Less

Port of Dan Eden's to Less

Cube Less

3D (animated) cube using only CSS (Less), originally used by LeanCloud (aka. AVOS Cloud)

Collection of CSS3 powered hover animated effects to be applied to links, buttons, logos, SVG, featured images and so on

Less Burguer

Port of to Less

Mixins library

Bidi

Set of mixins for creating bi-directional styling

Collection of mixins

Conversion of css3please.com to Less mixins

Collection of CSS style effects

Mixin library

Dynamic Stylesheet

Set of useful mixins

Est

Mixin library

Generate CSS hexagons with custom size and color

Helpful functions

Set of basic mixins

Lesshat

Smart mixins library

A jasmine like testing suite written in pure Less

Lessmore

Mixins library. Cross-browser support for the CSS3 features and more

Normalize

Modularized famous using Less

Collection of mixins

Preboot

Collection of mixins and variables for writing better CSS

Retina.js

JavaScript, SCSS, Sass, Less, and Stylus helpers for rendering high-resolution image variants

Shape

Collection of mixins for various shapes

TRRtoolbelt

Mixins and functions for common actions

Handshake Style Guide

This guide presents a collection of best-practices and coding conventions

WebMD Health Services Style Guide

This document outlines CSS/Less best practices at WebMD Health Services

JLessC

Less compiler written completely in Java

Less Engine

Runs Less in the Rhino JVM-based JavaScript interpreter

Less CSS Compiler for Java

Runs Less in the Rhino JVM-based JavaScript interprete

Less4j

Native Java implementation

Lesscss

Runs Less using Rhino, Nasshorn or node.js engine; 1.7.0 compliant

Lesscss Gradle Plugin

Gradle plugin based on Less

Compiler written in .Net

Compiler written in .Net

ILess

PHP port written in Javascript

Compiler written in PHP

PHP port

Pyhton Compiler

Compiler written in Python

Ruby Compiler

Less in Ruby's V8 Engine

Go Compiler

Runs Less inside embedded Javascript engine

Atom Linter

Linter plugin in the Atom text editor

Quick way to automatically convert CSS to Less, easy as copy and paste

CSS Less(ish)

Sublime Text 2 & 3 plugin that implements a stripped down version of the functionality in css preprocessors (such as Less)

Crunch 2 is a cross-platform (Windows, Mac, and Linux) editor with integrated compiling. If you work with large Less projects, you should definitely try it out, as you only need the free version for Less files

Dependency management built for Sass, Less, and CSS

This plugin extends the Eclipse IDE by providing handy features to edit and compile Less stylesheets

Eclipse Transpiler Plugin

Eclipse plugin to automatically transpile your files (Less, SASS, CoffeeScript, etc.)

Emacs

Emacs mode with support for compile-on-save

Grunt Contrib

Compile Less files to CSS using Grunt

Grunt Lint

Lint your Less files using CSS Lint from Grunt

Gulp Less

Plugin for Gulp

Hayaky

Hayaku is a bundle of useful scripts aiming for rapid front-end web development

Hyra Helper

CakePHP plugin that converts your Less files to CSS using only PHP

Koala is a cross-platform GUI application for compiling Less, sass and coffeescript

Less for Notepad++

Syntax Highlighting for Notepad++

Less Sublime

Syntax highlighting for Sublime Text

Lesshint

Tool to aid you in writing clean and consistent Less

CSS edits and image changes apply live. CoffeeScript, SASS, Less and others just work

SimpleLess is a minimalistic Less compiler. Just drag, drop and compile

Sublime Less2CSS

Sublime Text 2 Plugin to compile Less files to css on save

SublimeOnSaveBuild

Trigger a build the moment you save a file in Sublime Text 2. Works best with web projects that make use of Less, Compass and any other pre-processor or a makefile

Vim Less

This vim bundle adds syntax highlighting, indenting and autocompletion

If you ever write CSS, HTML, JavaScript, TypeScript, CoffeeScript or Less, then you will find many useful features that make your life as a developer easier

WinLess started out as a clone of Less.app, it takes a more feature-complete approach and has several settings. It also supports starting with command line arguments

Online Less compiler with optional formatting and minification at

Online Less compiler providing live demo for Less and est. Allowing users to switch among all versions of Less after 1.4.0 with optional est/Autoprefixer functionalities

Live demo of PHP compiler

live demo

Online Integrated Development Environment (IDE) that is hosted in a browser allowing users to edit and compile Less to CSS in real-time

live demo

Online compiler for Less CSS

A real time preprocesser compiler

This Online Less Compiler can help you to learn Less. You can go through the examples below or try your own Less code

CodePen is a playground for the front end side of the web

CSSDeck Labs is a place where you can quickly create some experiments (or testcases) that involves HTML, CSS, JS code

An online playground with an instantly ready coding environment

JS Bin is a webapp specifically designed to help JavaScript and CSS folk test snippets of code

Online Web Editor