- Syncthing + my own FileShelf[0] as a web interface, instead Dropbox;
- Miniflux, a web RSS reader;
- IPython notebooks;
- Customized Jekyll for my blog + comments powered by self-hosted Isso;
- postfix/dovecot + Roundcube for the web mail;
- ejabberd (mostly to have notifications from my VPS);
- goaccess for the web server statistics, portainer and a couple of FCGI scripts for monitoring and deployment;
I am still not satisfied with my setup completely and there are many other things I'd like to tinker with (e.g. DokuWiki, Grafana/Prometheus).
sandstorm.io looks very promising, but the last time I was put off by its desire to take over my VPS (maybe I will bite the bullet and get another dedicated VPS for it).