Computer Science: Websites

Whether you’re a first-time coder or an experienced developer looking to integrate the latest Apple technologies into your app, take advantage of these free online resources. You can join the Apple Developer Program to reach customers around the world on the App Store. You’ll also get access to beta software, advanced app capabilities, extensive beta testing tools, and app analytics.

Getting started is simple. We’ll give you everything you need to learn to code. Starting is easy. We’ll help you write your first line of code in minutes. Choose Your Skill Path. (Paid subscriptions, some courses are free)

A commercial website that has a number of free resources for programming C and C++, including tutorials, source code, references, and quizzes.

Learn to code — for free. Build projects. Earn certifications.

"This platform has been designed for every geek wishing to expand their knowledge, share their knowledge and is ready to grab their dream job. We have millions of articles, live as well as online courses, thousands of tutorials and much more just for the geek inside you."

Whether you’re scaling your startup or just learning how to code, GitHub is your home. Join the world’s largest developer platform to build the innovations that empower humanity. Let’s build from here.

Learn Swift For Free. With more free Swift tutorials than any other site, Hacking with Swift will help you learn app development with UIKit and SwiftUI. Search the site, or choose a learning path.

The Microsoft Developer website has many options. You can learn new skills, explore code samples, get help with app development, interact with the development community, watch videos, read blogs, and more. Microsoft products you can build on include, Windows, Microsoft Edge, Microsoft Azure, Microsoft 365, Dynamics 365, Microsoft Teams, Visual Studio, and Power Platform.

Microsoft Learn. Spark possibility.
Build skills that open doors. See all you can do with documentation, hands-on training, and certifications to help you get the most from Microsoft products.

Though primarily for Firefox developers, this website has tutorials and tools for JavaScript and HTML.

Replit is a platform for creating and sharing software. You can write your code and host it all in the same place. Replit is also a place to learn how to code, so we have some awesome built-in educational features as well.

Stack Overflow helps people find the answers they need, when they need them. We're best known for our public Q&A platform that over 100 million people visit every month to ask questions, learn, and share technical knowledge.

Master real, in-demand tech skills from home with Udacity’s 100% online learning platform. Stay ahead of the curve and get the skills you’ll need for the jobs of the future. (free and paid courses)

w3schools is one of the more visited sites for learning about building websites. It offers a broad range of free tutorials and references for subjects that include website building, HTML, CSS, JavaScript, Python, SQL, and more. It is a commercial website that is not sponsored by W3C.