If we follow the FSF's principles, there are no ethical SaaS. https://www.gnu.org/philosophy/who-does-that-server-really-serve.en.html https://www.gnu.org/phil

If we follow the FSF's principles, there are no ethical SaaS. https://www.gnu.org/philosophy/who-does-that-server-really-serve.en.html https://www.gnu.org/philosophy/who-does-that-server-really-s... So ethical software would be free software hosted on your own machine.