--- title: freeCodeCamp posts | daily.dev description: freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech. canonical: https://daily.dev/sources/freecodecamp twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/freecodecamp og:type: website og:site_name: daily.dev og:title: freeCodeCamp posts | daily.dev og:description: freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech. og:image: https://api.daily.dev/og/sources/freecodecamp.png og:image:width: 1200 og:image:height: 630 ---  # freeCodeCamp Follow FollowBlock freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech. Related tags: [#react](/tags/react)[ #javascript](/tags/javascript)[ #typescript](/tags/typescript)[ #mcp](/tags/mcp)[ #claude-code](/tags/claude-code)[ #github](/tags/github) [Posts about react](/tags/react)[Posts about javascript](/tags/javascript)[Posts about typescript](/tags/typescript)[Posts about mcp](/tags/mcp)[Posts about claude-code](/tags/claude-code)[Posts about github](/tags/github) [How to Catch Security Vulnerabilities in Code Before They Reach Your Pull Requests](/posts/how-to-catch-security-vulnerabilities-in-code-before-they-reach-your-pull-requests-bfxw4rcsv)[How to Design Gifting Features People Actually Use: Evidence from 58 Apps](/posts/how-to-design-gifting-features-people-actually-use-evidence-from-58-apps-yqxl5ssrl)[How to Use Differential Testing During a Legacy Migration](/posts/how-to-use-differential-testing-during-a-legacy-migration-epakjbafd)[How to Implement Feature Flags for Safe and Gradual Rollouts](/posts/how-to-implement-feature-flags-for-safe-and-gradual-rollouts-6vw4b4ldf)[Apple Watch’s New VO2 Max Test: How It Measures Your Cardiorespiratory Fitness](/posts/apple-watch-s-new-vo2-max-test-how-it-measures-your-cardiorespiratory-fitness-fhj5upnpe)[How to Connect to HMRC's Making Tax Digital API: A Beginner's Guide](/posts/how-to-connect-to-hmrc-s-making-tax-digital-api-a-beginner-s-guide-a7i3gadlt)[How to Prevent Race Conditions in Django](/posts/how-to-prevent-race-conditions-in-django-mrablcwec)[How to Sandbox a Linux Process with Landlock, No Root Required](/posts/how-to-sandbox-a-linux-process-with-landlock-no-root-required-0q4org4xy)[What Is an Agent Harness? The Architecture Behind Claude Code, DeepSeek Harness, and Hermes Agent](/posts/what-is-an-agent-harness-the-architecture-behind-claude-code-deepseek-harness-and-hermes-agent-yewiwnntj)[How to Build a Self-Evaluating AI System: Automated Testing and Evaluation Pipelines for LLM Applications](/posts/how-to-build-a-self-evaluating-ai-system-automated-testing-and-evaluation-pipelines-for-llm-applica-yppnqlvra) ## Most upvoted posts from freeCodeCamp ## Best discussed posts from freeCodeCamp ## All posts from freeCodeCamp ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/sources/freecodecamp#organization","name":"freeCodeCamp","url":"https://daily.dev/sources/freecodecamp","logo":{"@type":"ImageObject","url":"https://media.daily.dev/image/upload/t_logo,f_auto/v1628412854/logos/freecodecamp"},"description":"freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech."},{"@type":"CollectionPage","@id":"https://daily.dev/sources/freecodecamp#page","url":"https://daily.dev/sources/freecodecamp","name":"freeCodeCamp posts on daily.dev","description":"freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech.","about":{"@id":"https://daily.dev/sources/freecodecamp#organization"},"isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"freeCodeCamp"}]}]} ```