Autoprefixer vs Compass: What are the differences?
Autoprefixer: PostCSS plugin to parse CSS and add vendor prefixes to CSS rules. It is a CSS post processor. It combs through compiled CSS files to add or remove vendor prefixes like -webkit and -moz after checking the code; Compass: A Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain. The compass core framework is a design-agnostic framework that provides common code that would otherwise be duplicated across other frameworks and extensions.
Autoprefixer and Compass can be primarily classified as "CSS Pre-processors / Extensions" tools.
Compass is an open source tool with 6.91K GitHub stars and 1.23K GitHub forks. Here's a link to Compass's open source repository on GitHub.
According to the StackShare community, Compass has a broader approval, being mentioned in 107 company stacks & 186 developers stacks; compared to Autoprefixer, which is listed in 6 company stacks and 11 developer stacks.