Page speed, usability, SSL test

Bunch of server/site testing tools.

Markup/css tests

• Google Pagespeed
• GTmetrix Website speed and performance optimization
• Pingdom Website Speed Test
• WebPageTest
• W3C Markup Validation Service

HTTP Server

• Qualys SSL test

DNS/Server

• Vamsoft's SPF policy tester for IP + domain combos
• Viestintävirasto|Finnish Communications Regulatory Authority