Files/OS: Virtualization/Emulation

Virtualization

All-purpose VMs:
GNOME Boxes🐧, Quickemu🐧, VirtualBox⊞⌘🐧

Type 1 hypervisors (bare-metal):
KVM🐧

Type 2 hypervisors (OS-based):
QEMU⊞⌘🐧 (and Limbo🤖), VMware Workstation Player⊞🐧

Browser-based virtualization:
JSLinux☁, Virtual x86☁

Linux (on Linux):
User-mode Linux🐧

Linux (on Windows):
Cygwin⊞

Windows (on Linux):
Wine🐧, WinApps for Linux🐧

Mac (on Linux):
Darling🐧, OSX-KVM🐧

Android:
Anbox🐧⌘, Andy⊞⌘, BlueStacks⊞⌘, MEmu⊞, NoxPlayer⊞⌘, Waydroid🐧

Convenient VM Tools

VM manager:
Virtual Machine Manager🐧□

Disk/RAM drive emulation:
ImDisk⊞

Disk image inspection:
libguestfs🐧

Container management:
ManageIQ

Kubernetes

Argo:
awesome-argo💩