[hcs]

Lively Kernel all runs in the client, though, while repl.it runs the code server-side. Not that this was new, either, but it seems confusing to compare to Lively. (It's been years since I've checked out either of these projects so sorry if I'm misremembering or missing new developments.)

[robertkrahn01]

Not quite, Lively runs code both client side (JS, languages implemented on top of JS) as well as server side. The Lively server has a "subserver" system [1] that allows you to connect to VMs, compilers, etc.

[1] https://github.com/LivelyKernel/LivelyKernel/tree/master/cor...