Code my UI - Web Design Inspiration with Code Snippets.
FrontendArmory - Some great React/JS courses.
The Great Divide (2019) - Two front-end developers are sitting at a bar. They have nothing to talk about.
dotcom-rendering - Frontend rendering framework for theguardian.com. It uses React, with Emotion for styling.
Front-End Conferences - List of upcoming front-end related conferences.
Frontdesk - Community driven list of useful things for Front End Developers.
Frontend Guidelines - Some HTML, CSS and JS best practices.
Responsively - Web developer's browser.
Asayer - Frontend Application Monitoring.