Only for myself actually, but if you read this, blame yourself... More of a personlal bookmark list, with intentional addition pain, so I'll only bookmark stuff I might refer back to later.
It is a UN-curated awesome list
SQL Fiddle
mycli — A Terminal Client for MySQL with AutoCompletion and Syntax Highlighting.
TestMyCSS — CSS Optimization Checker
KeyframerStylie
CSS Animation Kit
Flexy Boxes — Flexbox Playground
Flexboxdefense — Tower Defense with a twist: all towers must be positioned with CSS Flexbox.
Flexbox Properties Demonstration
css-tricks.com — A Complete Guide to Grid
cssgridplayground.com — Try out CSS-Grid live
Find one of 17'000+ color names — codepen for color names
palettr.com — Generate fresh, new color palettes inspired by a theme or a place.
colormind.io — Colormind can extract color palettes from images
CSS Font Stack — Web Safe and Web Font Family with HTML and CSS code
Dev Fonts — Monospace/Fixed Width Programmer's Fonts
Font Flame — Tinder for font pairing
Font Squirrel — Webfont generator
FontCDN — A search tool for Google web fonts
Fontello — Icon fonts generator
Transfonter — Modern and simple CSS @font-face generator
Awesome Web Icons — awesome list with awesome icon fonts
Babel REPL
CodePen
D3-JS Playground
glot.io — JavaScript
glot.io — TypeScript
JS Bin
JSFiddle
repl.it — Node
repl.it — React
repl.it — React Typescript
UUID Primary Key in Rails 6 with PostgreSQL — a Medium article.
Rubular - a Ruby regular expression editor
glot.io - Ruby
repl.it - Rails playground
Ruby Metaprogramming Is Even Cooler Than It Sounds
rgcr/m-cli - Swiss Army Knife for macOS
buo/homebrew-cask-upgrade - brew cu - A command line tool for upgrading every outdated app installed by Homebrew Cask
skwp/dotfiles - YADR - (Yet Another Dotfile Repo) - The best vim,git,zsh plugins and the cleanest vimrc you've ever seen
wting/autojump - A cd command that learns - easily navigate directories from the command line
jaywcjlove/awesome-mac - Mac Awesome list