The best alternatives to Terrabook are DECO, Judge0 IDE, and Versal. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Judge0 IDE is a free and open-source online code editor that allows you to write and execute code from a rich set of languages. It's perfect for anybody who just wants to quickly write and run some code without opening a full-featured IDE on their computer.
Wall33 - A public wall on the internet where anyone can write anything (No login). You can create your own wall and share it with people, Others can write anything on your wall. Text is available for 24 hours on your wall after that is deleted automatically.
Programming on mobile App. SCode Studio is a mobile coding IDE and platform (Compiler for mobile), Where you can run your projects. Now you code anytime, anywhere and on the go.
Build software collaboratively with the power of AI, on any device, without spending a second on setup. Write code with Ghostwriter, an AI-powered pair programmer. Collaborate in our real-time multiplayer editor. Build, test, and deploy from the browser.