Purgecss is described as 'What is Purgecss?' and is an app in the Development category. There are five alternatives to Purgecss for Self-Hosted solutions and CSS. The best alternative is uCSS, which is both free and Open Source. Other great apps like Purgecss are Helium CSS (Free, Open Source), DropCSS (Free, Open Source), UnCSS (Free, Open Source) and PurifyCSS (Free, Open Source).
uCSS is made for crawling (large) websites to find unused CSS selectors. Features of uCSS include: • Find unused CSS selectors, given a HTML code base. • Find duplicate CSS selectors (also when no HTML is given). • Count matches for each rule.