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✶

Codewars

Learning Resources

A community where you solve kata — ranked coding challenges — and learn from thousands of other solutions.

freeweb
TutorialPythonFree
✶

Exercism

Learning Resources

A free practice platform with coding exercises in dozens of languages and feedback from real mentors.

freeweb
TutorialPythonFree
✶

Codecademy

Learning Resources

An interactive learning platform where you write code in the browser and get instant feedback as you learn.

freemiumweb
TutorialPythonPremium
✶

The Odin Project

Learning Resources

A free, open-source full-stack curriculum that takes beginners from zero to job-ready web developers.

open-sourceweb
TutorialFreeCSS
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✶

freeCodeCamp

Learning Resources

A free, self-paced coding curriculum covering web development, data science, and machine learning with certifications.

freeweb
TutorialCSSFree
✚

Frontend Checklist

Developer Resources

An exhaustive checklist of everything a frontend developer should verify before shipping a website.

open-sourceweb
CSSCheatsheetFree
✚

HTTP Status Codes

Developer Resources

A plain-language reference for every HTTP status code, from 200 to 599, with quick explanations.

freeweb
BackendDocumentationFree
✚

Can I Use

Developer Resources

Up-to-date browser support tables for HTML, CSS, and JavaScript features, essential for cross-browser work.

freeweb
CSSBrowserFree
✚

DevHints

Developer Resources

A curated collection of beautiful, printable cheatsheets covering programming languages, tools, and frameworks.

freeweb
CheatsheetDocumentationFree
✚

OWASP

Developer Resources

The open-source foundation's guides and checklists for building and securing software against common attacks.

freeweb
DocumentationBackendFree
✚

web.dev

Developer Resources

Google's hub for web development guidance, with practical guides, performance audits, and learning paths.

freeweb
DocumentationTutorialCSS
✚

DevDocs

Developer Resources

A fast, offline-friendly documentation browser that aggregates API docs for hundreds of languages and tools.

freeweb
DocumentationFreeBackend
✚

Roadmap.sh

Developer Resources

Interactive roadmaps that chart the path to becoming a developer in dozens of specialties and roles.

freeweb
DocumentationTutorialFree
▣

Flowbite

Templates

A Tailwind CSS component library with interactive UI components and a helpful set of blocks and templates.

freemiumweb
CSSUI KitDesign
▣

HTML5 UP

Templates

A collection of free, responsive HTML5 and CSS3 website templates you can download and customize.

freeweb
CSSFree
▣

Bootstrap

Templates

The world's most used CSS framework, providing responsive grid systems, components, and utility styles.

open-sourceweb
CSSUI KitFree
⬡

Swagger UI

APIs

The open-source tool that turns OpenAPI specs into interactive, self-documenting API pages.

open-sourceweb
APIBackendDocumentation
⬡

RapidAPI

APIs

An API marketplace where you discover, connect to, and manage thousands of third-party APIs in one place.

freemiumweb
APIPremium
⬡

Public APIs

APIs

A community-curated GitHub repository listing thousands of free public APIs, organized by category.

open-sourceweb
APIOpen SourceFree
⬡

Insomnia

APIs

A desktop API client for designing, testing, and debugging REST and GraphQL APIs with a clean UI.

freemiumcross-platform
APIBackendPremium
⬡

Hoppscotch

APIs

A lightweight, open-source API testing tool that runs entirely in the browser with a clean workspace.

open-sourceweb
APIBackendOpen Source
⬡

GitHub REST API

APIs

The official API for automating GitHub — repos, issues, PRs, releases, and actions — from your own scripts.

freeweb
APIBackendFree
⬡

Mapbox

APIs

Custom mapping and location APIs with beautiful vector tiles, geocoding, routing, and navigation.

freemiumweb
APIDesignPremium
⬡

Twilio API

APIs

Cloud communications APIs for SMS, voice, video, and email that developers can wire into any app.

freemiumweb
APICommunicationPremium
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