3. Dart SassThe reference implementation of Sass, written in Dart.
4. Ruby SassThe original, now deprecated Ruby implementation of Sass
11. Libsass PythonA straightforward binding of libsass for Python. Compile Sass/SCSS in Python with no Ruby stack at all!
12. LibsassLibSass is a C++ port of the original Ruby Sass CSS compiler with a C API.
We coded LibSass with portability and efficiency in mind. You can expect LibSass to be a lot
faster than Ruby Sass and on par or faster than the best alternative CSS compilers around.
14. migratorTool for migrating stylesheets to new Sass versions