+ compiles template.less file and all imported files to template.css
+ uses caching to track changes and better performance
+ option to force compilation on each reload
+ option to compress .css output
+ option to preserve comments
+ less and css path configurable
+ client-side compiler for better debugging, thanks to piotr.cz
+ compatible with J! 2.5 + 3.x
+ supports Twitter Bootstrap 2.x and 3.x (thanks to @robwent)
+ Option to parse only frontent, backend or both
+ Paths for frontend and backend template configurable
+ fr-FR translation contributed by lomart.fr
+ ru-RU translation contributed by Pazys
+ Uses Joomla! One-Click-Updater
While customising your template, you need this. This plugin catch the less file you point in the configuration, from your template less folder, and compile it to a css file in your template css folder.
Thanks to the authors to shared their work !