CodeSandbox vs Koding: What are the differences?
What is CodeSandbox? Online playground for React. CodeSandbox allows developers to simply go to a URL in their browser to start building. This not only makes it easier to get started, it also makes it easier to share. You can just share your created work by sharing the URL, others can then (without downloading) further develop on these sandboxes.
What is Koding? A new way for developers to work. Koding is a feature rich cloud-based development environment complete with free VMs, an attractive IDE & sudo level terminal access!.
CodeSandbox and Koding can be primarily classified as "Cloud IDE" tools.
CodeSandbox is an open source tool with 7.52K GitHub stars and 931 GitHub forks. Here's a link to CodeSandbox's open source repository on GitHub.