Add CodeTasty

[isonno]

I just discovered https://codetasty.com/

No affiliation with them, but it looks like it belongs on your list under "Full IDE".

Also, add https://pyfiddle.io/ to "Snippets" (again, no affiliation)

[styfle]

Looks good, are either of them open source?

[viveksh1]

@styfle CodeTasty is not open source, but parts of it are.
Pyfiddle has been shut down.
I hope this issue can finally be closed.