General

• DevDocs
• Devhints

CSS

• CSS Reference
• CSS Triggers
• css.gg: 700+ Pure CSS, SVG & Figma UI Icons Available in SVG Sprite, styled-components, NPM & API
• Shadows (brumm.af) - Make a smooth shadow, friend.

Git

• git branch --merged BRANCH | grep -v '^[ *]\*BRANCH\$' | xargs git branch -d
  • stage: git branch --merged stage | grep -v '^[ *]*stage$' | xargs git branch -d

Jest

• Zero config GUI for Jest: npx majestic [majestic]

Performance

• Pingdom Website Speed Test
• ★ WebPageTest

Testing

• Mockaroo - realistic data generator