Most developers already know about Sass and the value of using Sass on web projects. The difficulty comes with learning version differences and rendering engines.
Sass Compatibility is a free open source project for testing differences between Sass engines. It’s hosted on GitHub which means all the code is freely available and open for pull requests.
The site deals primarily with derivations of snytax between Ruby Sass & Libsass. If you already know your commands by heart then this probably won’t prove as useful. But it’s still a handy resource to keep bookmarked just in case.
Best of all newbies will find helpful code snippets for building unique Sass blocks from scratch.
It’s truly a treasure trove of useful Sass resources meant for any level of developer. To contribute you can visit the official GitHub page and learn more.