Alternatives to Quickgui
A graphical desktop front end for Quickemu that downloads operating systems and launches virtual machines. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Quickgui
A graphical desktop front end for Quickemu that downloads operating systems and launches virtual machines.
Replacements
Listings that take over the same core job as Quickgui.
GNOME Boxes
A simple GNOME desktop app for creating and running virtual machines on Linux.
GNOME Boxes is an open-source Linux desktop app that downloads and installs common operating systems automatically, without depending on Quickemu, but has no macOS version.
VirtualBox
The free desktop hypervisor most people start with: run Windows, Linux or BSD in a window on the machine you already have.
VirtualBox is an open-source graphical hypervisor for Windows, macOS and Linux with snapshots and shared folders, though you fetch installation images yourself.
Virtual Machine Manager
The standard desktop front end for KVM on Linux, plus the command line tools that go with it.
Virtual Machine Manager is the standard open-source graphical front end for KVM on Linux, with more settings but assuming some libvirt knowledge.
UTM
Runs Windows, Linux and other systems in a virtual machine on a Mac, iPhone or iPad.
UTM gives Mac users an open-source graphical app for Windows, Linux and macOS guests, with emulation of over thirty architectures.
Quickemu
Downloads an operating system and builds a properly configured QEMU virtual machine from one short config file.
Quickemu is the command-line tool Quickgui drives, so switching drops the graphical list in favour of two commands and hand-edited config files.
Multipass
Canonical's tool for launching a fresh Ubuntu virtual machine with one command, on Windows, macOS or Linux.
Multipass launches Ubuntu virtual machines with one command on Windows, macOS or Linux, but focuses on Ubuntu rather than a list of operating systems.
Also worth comparing
These listings name Quickgui as their own alternative, so the relationship runs both ways.
OSX-KVM
Scripts, OpenCore files and firmware images for running macOS in a QEMU/KVM virtual machine on Linux.
Quickgui adds a graphical front end over Quickemu for downloading operating systems and creating virtual machines, though it is not open source and needs Quickemu installed.
Similar software
Related functionality, not a direct replacement.