Django Packages lists 160 apps that work with Python 3. See https://www.djangopackages.com/python3/
From personal experience, most of the critical ones are compatible.
From personal experience, most of the critical ones are compatible.
Still in progress, but there you go.
There's always the option of just using Upstart or systemd as well.
Of course I'm partial to my new pave project: https://bitbucket.org/mixmastamyk/pave It is based on fabric, and uses a yaml file to automate it.