React is the library most frontend jobs ask for. It lets you build interfaces out of reusable components and manage state (the data that changes as users interact) without your code becoming impossible to follow. Once you know JavaScript well, React clicks fast. If it does not click, that is almost always a sign you skipped Step 2, so go back and shore up plain JavaScript first. All six free React courses in our catalog, ranked:
Scrimba's React course is first because of the format. Same edit-in-the-player approach as their JavaScript course, so you build components as you learn them. It moves quickly and keeps you hands-on, which is the right speed once you already know the language.
The Odin Project's React path ranks second and is the best project-based option, with one real advantage: it sits inside the same curriculum as your Foundations work, so the tooling and habits carry straight over. You build and deploy real apps, which is exactly what a portfolio needs. If The Odin Project is already your backbone, treat this as your number one.
freeCodeCamp's Front End Development Libraries certification is third. It teaches React inside a wider curriculum that also covers Redux, Sass, Bootstrap, and jQuery, ending in a free certificate. The jQuery section is dated for 2026, so skim it. Pick this one if the credential matters to you.
Two entries need an honest note before you click.
The Meta Front-End Developer Certificate has "react-native" in our URL slug, but the course itself is a web front-end track: HTML and CSS, JavaScript, React for the web, UI and UX principles, and a capstone. The catch is not the topic, it is the price. It is free to audit, and the certificate is behind Coursera's paywall, so the credential that makes it appealing is the part you cannot get for free.
Full Stack Open's React Native module is the opposite case: the slug is accurate and the course really is mobile. It covers cross-platform apps with React Native and Expo, not React for the browser. It is genuinely free with a certificate and it is well taught, but it will not teach you web React. Do step 3 on the web first, then take this if you want to ship to phones too.
Advanced React and Redux Projects ranks last because it is not really a React course. It is freeCodeCamp's Data Visualization certification, five substantial projects built with D3.js, React, Redux, and Sass. Excellent once React already makes sense, wrong as a starting point. For the full step-3 ranking, see
our React course guide.