Hello, As a new user of Thymeleaf, I started with the latest version, 3.0.2.RELEASE I also found some great dialects under http://www.thymeleaf.org/ecosystem.html Unfortunately, some don't seem to be actively supported, and are not compatible with Thymeleaf 3. e.g. HTML5 Validation Dialect see http://stackoverflow.com/questions/40870051/html5-related-dialect-compatible-with-thymeleaf-3 So, could you please update the Ecosystem page by flagging which version of Thymeleaf each element supports?