[Sharma]

https://divjoy.com/ did a great job of providing reactjs(and extras) and was free for initial few months. Definitely refer to that for more inspiration on design and capabilities. May be provide some templates(pre-built) of few types(like the one you have it as part of tutorial)

[ipselon]

The Webcodesk online version is designed to demonstrate the components and how they can be combined in an application. The components themselves can be created in the local version - it is Open Source.