tiosetup

This seems to be the source code for it: https://github.com/TryItOnline/tiosetup > https://tryitonline.net is a web site that started out as a place for hosting solutions to code golf puzzles presented on http://codegolf.stackexchange.com/. It can be used by anyone for free to quickly try out and share code snippets, with or without code golf in mind alike, in a big number of practical and recreational programming languages.

Try It Online[0] seems to offer a very similar service - if you don't care about the collaboration aspect of it. It claims to be self-hostable[1]. glot.io[2] is another, which seems to fit more in the realm of "pastebin with runnable snippets". As I understand it, a big sell of repl.it is that they have some kind of collaborative editing support, which none of the alternatives I was able to find in a few minutes of digging have. Google Colab has this, but only support Python (AFAIK) and is not open source. 0 - https://tio.run/# 1 - https://github.com/TryItOnline/tiosetup 2 - https://glot.io/

Not really, with SELinux, which is what TIO uses. TIO can be deployed pretty much anywhere SEL is supported. Instructions here: https://github.com/TryItOnline/tiosetup