LibHunt tracks mentions of software libraries on relevant social networks. Based on that data, you can find the most popular projects and their alternatives.
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CodePen
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
Code Arcade
CodinGame
hackattic
Daily Coding Problem
Frontloops
Code Racer
Real Dev
Codewars
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Based on our record, CodePen seems to be a lot more popular than Code Arcade. While we know about 512 links to CodePen, we've tracked only 4 mentions of Code Arcade. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 12 days ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 9 months ago
CodePen is where creativity meets frontend code. You can write HTML, CSS, and JavaScript and see results instantly in the browser. - Source: dev.to / 11 months ago
For those preferring agent-based approaches, Replit Agent shines. Khris Steven, Founder of KhrisDigital Marketing, notes, "You can simply describe what you want your app to do in plain English, and Replit Agent will generate the code and deploy it." This natural language interface fosters collaboration, turning ideas into deployable apps in minutes. - Source: dev.to / 11 months ago
After wrapping everything up, I hosted the final toggle on CodePen so others could test it out and learn from the approach. What started as a simple idea became a complete, responsive, and accessible component, thanks to a process that blended creativity with automation. - Source: dev.to / 12 months ago
You can practice your code solving skills here: Https://app.codesignal.com/arcade Https://leetcode.com/problemset/all/. Source: about 3 years ago
CodeSignal's Arcade (signup required) has a lot of practice problems at different levels that can help break you out of the mindset of copying tutorial code. Source: over 4 years ago
I like the Databases section of CodeSignal Arcade. Problems increase in difficulty, plus I've found it's the platform a lot of companies use for SQL assessment so you'll get a good sense of the type of questions to expect. Source: over 4 years ago
Codesignal has a good set of SQL questions. Not sure they "support" Postgres, but there's 84 free levels under the Arcade section. https://app.codesignal.com/arcade. Source: over 4 years ago
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
CodinGame - CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
CodeSandbox - Online playground for React
hackattic - No nonsense, real world programming challenges
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Daily Coding Problem - Get exceptionally good at coding interviews