For your self-hosted SaaS needs, Yunohost is awesome.
One-click install of many apps and services – but more impressively one-click upgrades as well. Nice, user-friendly, very little maintenance required. Self-hosting for people who don’t want to do system administration.
I’ve been running a Yunohost server for the past three years, adding and removing various services on the fly. Love to use it, and the great work of people behind this.