RightWebPage Professional

RightWebPage Professional is a quality assurance tool that verifies many aspects of conformance of Web sites with best practices of Web engineering. You can use it connected to the Internet, inside a corporate intranet or even locally, without a network connection. Web sites can be tested for compliance to W3C standards such as CSS, HTML, XHTML, HTML5, SVG, MathML, mobileOK, i18n, WCAG and many others suggested by ISO 23026:2006 - Standard of Best Practices of Web Engineering.
You can also create functional test suites that are recorded during navigation and played back with online verifications that indicate change of website contents or interactions.