ultra_marine_studio
Dippy_Dew
andydh
This is a very solid and reliable CSS compress tool but syntax highlighting is, unfortunately, missing...
car_rejob
This is the most accurate and safest compressor out there. It's surprisingly compatible with the new, recent experimental css syntax. There is just some minor issues with speed.
SantaFe
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Minify CSS
Prices are in US Dollars.