VMmanager is described as 'Linux-based VPS management web control panel, which presents perfect tools for creating virtual machines, providing VPS hosting services and building cloud infrastructure' and is a popular Virtualization Tool in the Network & Admin category. There are more than 10 alternatives to VMmanager for a variety of platforms, including Linux, Online / Web-based, Self-Hosted solutions, Windows and Mac. The best alternative is Proxmox Virtual Environment, which is both free and Open Source. Other great apps like VMmanager are oVirt (Free, Open Source), Xen Orchestra (Freemium, Open Source), Danube Cloud (Free, Open Source) and Virtualizor (Paid).
oVirt is a virtualization management application. That means that you can use the oVirt management interface ( the oVirt engine) to manage hardware nodes, storage and network resources, and to deploy and monitor virtual machines running in your data center.
oVirt vs VMmanager opinions
pros, cons and recent comments
full featured from 4.2 version ( like vSphere ). Gluster / Docker support too
XO is a web UI providing a simple and nice web interface to manage XCP-ng and Citrix Hypervisor (formerly (XenServer) infrastructure (VM, servers, pools, etc.). It's also a fully feature backup solution for those platforms.
It is a UI built on top of Webmin for managing virtual systems, such as Xen, KVM and OpenVZ instances. Using Cloudmin you can create, destroy, resize, startup, shutdown and restrict multiple instances using different virtualization technologies from a single interface.
WebVirtMgr is a libvirt-based Web interface for managing virtual machines. It allows you to create and configure new domains, and adjust a domain's resource allocation. A VNC viewer over a SSH tunnel presents a full graphical console to the guest domain.
Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ, Linux KVM, Xen Paravirtualization and Xen HVM support. SolusVM allows you and your clients to manage a VPS cluster with security & ease.