How does it compare to Glitch, which seems to be trying to achieving the same thing, however? And ObservableHQ? (though the focus seems different there)
In addition to the published apps on the discovery side of the platform, we've made a significant investment in tech that enables creators/makers to develop and remix apps in a new way (including spinning up "remote localhost" containers for development; building a collaborative online editor with a unique editing experience that lifts no-code visual abstractions from the underlying code; integrated deploy/CI for both frontends and backends; and other goodies like support for custom domains with automatic HTTPS). This video shows some of that in action [0].
[0] - https://www.youtube.com/watch?v=t5uoqPFInlY&feature=youtu.be...