15 amazing websites that will change your way of coding

🧵👇
http://regexr.com 
• online tool to learn, build & test Regular Expressions

http://alexnisnevich.github.io/untrusted/ 
• JavaScript game

http://learn-anything.xyz 
• Search anything here and it will show you the correct roadmap with all the necessary resources
http://pullrequest.com 
• Code review as a service by expert engineers

http://extendsclass.com 
• Syntax validators, code formatters, testers, HTTP clients, mock server, but also a SQLite browser

http://repl.it 
• Code, create, and learn together
http://free-for.dev 
• A huge list of free resources and tools which is the result of Pull Requests, reviews, ideas and work done by 500+ people

http://app.diagrams.net 
• Drawing tools to make design, ER diagram, flow charts etc
http://graphonline.ru 
• Useful tool for visualizing Graphs data structure

http://ide.onelang.io 
• Convert the code of one programming language into another
http://codemyui.com 
• Provides some awesome snippets which you can use in your projects.

http://patternify.com 
• A CSS Pattern Generator

http://bestcssbuttongenerator.com 
• Generate some amazing buttons in few clicks
http://cs.usfca.edu/~galles/visualization/Algorithms.html
• Learn Algorithms in more efficient way

http://codeshare.io 
• Share Code in Real-time with Developers. An online editor for teaching and interviewing
Any website you want to add to make this thread awesome? 🤩👇
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