Really Good UX - A library of screenshots for UX inspiration
UX Research Field Guide - Your map to the world of UX research 🌏🕵️♀️
Usability.gov - Resource for user experience (UX) best practices & guides
Checklist Design - The best UI and UX practices for production ready design.
UX Check - Easy heuristic evaluations on your website (chrome ext.)
moyo - Make your UX qualitative testing easier with moyo