I have used cockpit and like it. It allows me to quickly see the entirety of my system.
But, it doesn't offer any way to review my incus containers.
So, I tried wolfstack, which was recently listed on HN.
It appears it only supports lxc. I'm surprised, isn't lxc and incus more or less 1:1 synonymous (unless you get into recent more complexities)?
I'm feeling like it is hard to find a simple GUI to just review a system and manage a bunch of containers and VMs.
We do have a cockpit-podman plugin and have added recently some features to simplify management of podman quadlets. (podman quadlets is like a systemd-friendly version of docker compose, which is a good fit for a single server use case)
So if you get onboard with podman, you may get some benefits from the Cockpit UI for it.
But you are right, there are many different container technologies and we haven't catched up with all of them.
I use proxmox. I only use it for a home lab but it's pretty good and all I use are lxc containers.
proxmox
Do you mean LXD and Incus? If so, sort of. Incus is a fork of LXD but it diverged quite a bit and due to the LXD licensing change, Incus can't take anything from LXD but LXD can from Incus. Incus is a community project and is a lot more active. They both use LXC under the hood.
Finding a simple GUI is not going to be easy because everyone has a different definition of what "simple" means. It also depends on what you mean by "review" and "manage". There were a few web UIs for LXD containers and they were ported or used for Incus containers. Some are still maintained and active.
I personally prefer the command line and find it easier and simpler than using graphical interfaces so don't have a recommendation. When the number of containers and servers becomes large enough to warrant anything else, then that's when automation starts.