CSS HTML Validator 2019/v19 - various editions. Formerly known as CSE HTML Validator. The v19.02 update includes improvements when running under Wine.
Pretty much everything except the integrated web browser which uses the Internet Explorer engine. Fortunately it's not a significant feature of the program.
What does not
The integrated web browser is not available.
Use an external browser. This is recommended regardless.
What was not tested
All major functions were tested
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Current||Ubuntu 19.10 "Eoan" (+ variants like Kubuntu)||Jun 22 2019||4.4||Yes||Yes||Yes||Gold||Albert Wiersch|
|Show||Mac OS X 10.8 "Mountain Lion"||Feb 08 2013||1.4.1||Yes||Yes||Silver||Albert Wiersch|