less-watch-compiler
A command that watches folders(and subfolders) for file changes and automatically compile the less css files into css. This is a file system watcher and compiler.
styles
Compile your LESS stylesheets using JSON and underscore.
buildr
The (Java|Coffee)Script and (CSS|Less) (Builder|Bundler|Packer|Minifier|Merger|Checker)
gulp-dependents
Gulp plugin that tracks dependencies between files and adds any files that depend on the files currently in the stream, thus enabling incremental build of pcss, less, scss, sass, with extensibility points to support other file types.