MarkSheet is described as 'Browser-based guide and tutorial for HTML and CSS tutorial' and is an website in the Development category. There are five alternatives to MarkSheet, not only websites but also apps for a variety of platforms, including Android, iPhone, Android Tablet and Windows Phone. The best alternative is Enlight - Learn to Code, which is both free and Open Source. Other great sites and apps similar to MarkSheet are Learn HTML (Freemium), htmlreference.io (Free, Open Source), Code Hero (Freemium) and CSS Reference (Free).
In our interactive HTML courseware, carefully selected content will be followed by quizzes and checkpoints. Complete a series of hands-on exercises and practice while writing real HTML code. Our content is concise, checkpoints are enjoyable, and learning is guaranteed.
HTML Reference is a free visual guide to HTML elements and attributes, implemented as a web app that makes it easy to find and narrow down tags and types of tags based on attributes like "inline", "meta" and more.
It is a first-person coding puzzle platformer that equips you with a code ray that casts C# at your target. Hitting the ~ key opens the code console and the entire Unity editor toolset, letting you build games within Code Hero and Unity.