+1 for Proxmox VE integration.
In the mean time the Proxmox VE web UI already works quite well with the plugin Web Page (Chrome), except when connecting to VM consoles via SPICE.
This could be resolved by adding the option to open certain files right after downloading them (i.e. the virt-viewer configuration file with the extension “.vv”), as per suggestion Web Page (Chrome): Configure file download behaviour (prompt/auto save/auto open). Please upvote.