We are an authorized partner of Untangle, and we primarily work with small businesses that have limited needs. We have deployed Untangle NG Firewall z4 Plus to the majority of our clients. With simple hardware and a monthly service fee, it's very affordable for our clients.
The software versioning is 16.5. We have deployed them primarily on-premises. We have a couple virtualized and on ESXi servers, and that's pretty much it. They're fully managed from our cloud database directly on untangle.com/cmd.