Have you discovered https://unhosted.org https://unhosted.org? For the server-side, you could let users provide their own backend (https://unhosted.org/practic

Have you discovered https://unhosted.org https://unhosted.org? For the server-side, you could let users provide their own backend (https://unhosted.org/practice/31/Allowing-the-user-to-choose-the-backend-server.html https://unhosted.org/practice/31/Allowing-the-user-to-choose...).