Hi, Michael here from Pulse CMS and 8.5 years DH customer
Pulse is a flat file CMS without the need to hooking up a database. It's really easy to theme and deploy - just FTP the download folder to install - and clients love using it. There's 3,736 users currently.
Would be awesome to have this listed as a one-click install for DH users and I could then recommend on the Pulse site also for visitors to sign up for DH for the synergy.
Look at the site (https://www.pulsecms.com/) to see how fast it is on DH