Sourcehut is missing in the list; it’s built on the classical concept of sending patches / issues / bugs / discussion threads via email and it integrates this concept into its mailing lists and ci solution that also sends back the ci status / log via email.
Drew Devault published helpful resources for sending and reviewing patches via email on git-send-email.io and git-am.io
If you want to play with quantum wave packets, I built a quantum Web-based Simulation tool for non-relativistic quantum mechanics in 2016: https://quantum-simulation.de
The split-operator method for the numerical solution of the time-dependent Schrödinger equation is used to simulate the propagation of a Gaussian wave packet in arbitrarily adjustable potentials.
Web-based Simulation tool (made in 2016) for non-relativistic quantum mechanics. The split-operator method for the numerical solution of the time-dependent Schrödinger equation is used to simulate the propagation of a Gaussian wave packet in arbitrarily adjustable potentials.