hook.io supports something similar to TonicDev ( albeit with no reverse or rewind ), but with a lot more features and 13+ programming languages. It's also open-

hook.io supports something similar to TonicDev ( albeit with no reverse or rewind ), but with a lot more features and 13+ programming languages. It's also open-source. Here is a simple multi-language scratch pad that can be saved to a URL endpoint: https://hook.io/editor https://hook.io/editor