There is the german project particify. But that is rather ment for feedback and questions while a lecture is going on. It is used by quite a number of universities in Germany and Austria. Unfortunately at the moment it is all in german. But possibly they are working on an englisch version. Should' nt be too hard. It's Open Source, you could customize it. Https://particify.de/. Source: over 1 year ago

Prepros - Prepros can compile Sass, Less, Stylus, Pug/Jade, Haml, Slim, CoffeeScript, and TypeScript out of the box, reloads your browsers and makes it easy to develop & test your websites so you can focus on making them perfect. You can also add your own tools with just a few clicks. - Source: dev.to / 4 months ago

I use this for easy mode: https://prepros.io/. Source: over 1 year ago

If you want a nice GUI like Compass, check out Prepros. Source: over 1 year ago

Prepros - Prepros can compile Sass, Less, Stylus, Pug/Jade, Haml, Slim, CoffeeScript and TypeScript out of the box, reloads your browsers and makes it really easy to develop & test your websites so you can focus on making them perfect. You can also add your own tools with just a few clicks. - Source: dev.to / almost 3 years ago

I absolutely love Prepros ( http://prepros.io ) . It is very fast, works well, is actively developed and is free if you don't mind an occasional nag screen. I've been using it for some years now. Source: about 3 years ago