Really Good UX - A library of screenshots for UX inspiration
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Laws of UX - Key maxims that designers must consider when building UX
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Owletter - Keep an Eye on Your Competitors' Newsletters
Userflows - Automatically generate user journeys