Inbound Rocket - Converts visitors into leads, subscribers & customers
Checklist Design - The best UI and UX practices for production ready design.
ConversionChecklist.org - A 41 point checklist to make your website convert better
UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.
Conversion Lab - Get high conversion rates on landing pages
Uxcel - The easiest way to learn UX/UI design