It's been super stable and great for us. Plus #smartos has been incredibly responsive and helpful with any problems we run into.
There is also Proxmox and Cloudstack.
I wanted to dive into Joyent but their wiki was skeletal.
To make my comment more useful: I'm hearing good things about Proxmox and will likely lab it up soon. r/homelab has some feedback on it as well.
https://docs.joyent.com/private-cloud
Anything missing or questionable could usually be resolved by looking in the docs folder of the corresponding service's github repo.
I wanted to dive into Joyent but their wiki was skeletal.
To make my comment more useful: I'm hearing good things about Proxmox and will likely lab it up soon. r/homelab has some feedback on it as well.