Some nice collection (Source: Twitter)
Published: 2022-07-18 05:52:14

Online learning platforms Blue book 
- Udemy 
- FreeCodeCamp
- Treehouse 
- Frontend masters 
- Coursera
- Traversy media
- SoloLearn 
- Codecademy
- Udacity 
- Alison 
- Code college
- LinkedIn Learning
- Skillshare 
- EdX


Editors and share code snippets ✍🏻 
- PlayCode
- JSFiddle
- CodePen
- StackBlitz
- JSBin
- Codesandbox
- Codeinterview .io
- godbolt .org
- wandbox .org
- carbon .now.sh
- pastebin .com
- ideone .com
- ide .judge0.com

Documentations and notes Page facing up
- w3 schools
- mdn
- Devdocs
- geeksforgeeks
- tutorialspoint
- javapoint

Competitive programming Woman technologist
- CodeChef
- HackerEarth
- HackerRank
- AlgoExpert
- LeetCode
- TopCoder
- Codewars
- Codeforces
- Coderbyte 
- Exercism

Learn by playing game Video game
- Grid garden
- Flexbox defense
- Codecombat
- Unfold
- Ruby warrior
- Screeps
- coding game
- CodeMonkey
- CSS diner
- Flexbox froggy
- Check IO
- Cyber-dojo
- Untrusted

Colors
- Colorhunt
- Paletto
- Design Seeds
- Coolors
- Bootflat
- 0 to 255
- uiGradients
- BrandColors
- Image color picker
- Colour Lovers
- WebGradients
- Egg gradient
- Gradient Hunt
- Color-hex
- FlatUIColors
- CSS gradients

Background 
- Repeat-X Repeat-Y
- Texture King
- Pattern8
- Subtle Patterns
- Patternico
- BG Patterns
- Lost and Taken
- Freepik
- Cool backgrounds
- BG generator

 Icons ♠
- Icons8
- Captain Icon
- Iconmonstr
- Linear Icons
- Pixeden
- Perfect Icons
- Font Awesome
- flaticon
- Fontello
- The Noun Project
- Endless Icons
- Round Icons
- Iconfinder
- Freeicons
- Icon-icons
- Findicons


Illustrations
- Undraw
- Freepik
- IRA design
- DrawKit
- Absurd Illustrations
- Handz
- freeillustrations .xyz
- Freebie Supply
- ManyPixels
- Vivid.js
- Humaaans
- Open Doodles
- Icons8 
- Glazestock
- Paper illustrations
- illlustrations .co
- isometric .online

Photos Camera
- Unsplash
- Pixabay
- PicJumbo
- IM Free
- Pexels
- Flickr
- Gratisography
- Stock Up
- Cupcake
- Adobe Stock
- Icons8
- Rgbstock
- Pikwizard
- Stocksnap
- Shutterstock
- Freestocks


 Testing Test tube 
- Pingdom
- Website Speed Test
- SEO Site Checkup
- Uptrends
- Dotcom-Tools
- GTmetrix
- WebPageTest
- Dareboost
- SEO tools
- Nibbler
 - BrowserStack

Hosting 
- Github pages
- Netlify
- Firebase
- AWS
- Vercel
- Heroku


JavaScript visual libraries
- Chart.js
- D3.js
- React-vis
- Three.js
- Victory
- Chartkick
- Google Charts
- Flexmonster
- ApexCharts
- Echarts
- Frappe Charts
- ReCharts

CSS Generators
- csssbuttongenerator .com
- svgator .com
- cssbuttoncreator .com
- cssgenerators .net
- svgbackgrounds .com
- bgjar .com
- cssboxshadow .com
- css3generator .com
- cssfiltergenerator .com
- neumorphic .design
- coolbackgrounds .io
- css3buttongenerator .com
- neumorphism .io
- glassmorphism .com
- css3generator .com
- Fancy-border-radius
- bennettfeely .com/clippy
- cssgradient .io
- blobmaker .app
- getwaves .io
- cssgenerator .org



 Interview preparation
- CodeChef
- HackerEarth
- LeetCode
- HackerRank
- Interview Cake
- InterviewBuddy
- glassdoor
- AlgoExpert
- interviewing .io
- Interview camp
- Coderbyte
- InterviewBit
- GeeksForGeeks
- AmbitionBox



Code snippets
- Codepen
- Codesandbox
- CSS-Tricks
- Hakim .se
- Code My UI
- CreativesFeed
- Bootsnipp
- 30 seconds of code
- 30 Seconds of CSS
- Stackoverflow
- Code to go
- Tweetsnippet
- GitHub
- W3 Schools
- EnjoyCSS
- Web Code Tool