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50 resources · Page 1 of 3

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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
★

Joplin

Productivity Tools

An open-source note-taking app with Markdown support, end-to-end encrypted sync, and a focus on privacy.

open-sourcecross-platform
Note TakingOpen SourceFree
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★

Logseq

Productivity Tools

An open-source knowledge base built on local Markdown files with outliner editing and a powerful graph view.

open-sourcedesktop
Note TakingOpen SourceProductivity
✚

HTTP Status Codes

Developer Resources

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

freeweb
BackendDocumentationFree
✚

Regex101

Developer Resources

An interactive regex tester with real-time highlighting, explanation, and a library of community patterns.

freeweb
BackendCheatsheetFree
✚

OverAPI

Developer Resources

An enormous index of programming cheatsheets gathered from across the web into one searchable page.

freeweb
CheatsheetFreeBackend
✚

OWASP

Developer Resources

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

freeweb
DocumentationBackendFree
✚

DevDocs

Developer Resources

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

freeweb
DocumentationFreeBackend
⬡

Swagger UI

APIs

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

open-sourceweb
APIBackendDocumentation
⬡

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
⬡

Stripe API

APIs

A developer-friendly payments API with clean documentation, libraries for every language, and instant webhooks.

freemiumweb
APIBackendPremium
✦

SponsorBlock

Browser Extensions

An open-source browser extension that automatically skips sponsor segments and other non-content parts of YouTube videos…

open-sourceextension
BrowserFreeOpen Source+1
✦

JSON Viewer

Browser Extensions

A browser extension that formats, validates, and syntax-highlights JSON in the browser with collapsible trees.

freeextension
BrowserBackendFree
✦

Wappalyzer

Browser Extensions

A browser extension that instantly reveals the technologies powering any website you visit.

freeextension
BrowserBackendFree
✦

uBlock Origin

Browser Extensions

An efficient, open-source ad blocker that removes ads and trackers with minimal impact on page load speed.

freeextension
BrowserFreeOpen Source
✿

Inkscape

Applications

A free, open-source vector graphics editor for creating scalable illustrations, icons, and logos.

open-sourcecross-platform
DesignOpen SourceFree
✿

Krita

Applications

A free, open-source painting program built specifically for digital artists and illustrators.

open-sourcecross-platform
DesignContent CreationOpen Source
✿

GIMP

Applications

A free, open-source image editor with a full toolkit for retouching, compositing, and photo manipulation.

open-sourcecross-platform
DesignOpen SourceFree
✿

Blender

Applications

A free, open-source 3D creation suite covering modeling, sculpting, animation, rendering, and video editing.

open-sourcecross-platform
DesignVideoOpen Source
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