Peacenik is an ad-free, hate-free, distributed social network
See the docs here.
Peacenik makes a great demo application for Kubernetes. All you need is a valid Domain name, access to your DNS records, and an S3 compatible bucket.
To install Peacenik on your k8s cluster:
cd peacenik/.k8s/demo
nano settings.toml
python launcher.py
Everything should be up and running in a minute or so.