awesome-less

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

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

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

Makes web accessibility easier for Bootstrap developers.

Collection of free themes for Bootstrap.

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

Mixins library.

A library of CSS3 keyframe animations authored using Less.

Port of Dan Eden's

Set of mixins for creating bi-directional styling.

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

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

Linter plugin in the Atom text editor.

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.

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

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

Dependency management built for Sass, Less, and CSS.

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

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

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

Compiler written in .Net.

Runs Less inside embedded Javascript engine.

PHP port written in Javascript.

Less compiler written completely in Java.

Native Java implementation.

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