When comparing Virtual Box vs Unclutter, the Slant community recommends Virtual Box for most people. In the question“What are the best Mac OSX apps for someone that's new to Apple?” Virtual Box is ranked 15th while Unclutter is ranked 22nd. The most important reason people chose Virtual Box is:
It works for Windows, macOS, Linux, BSD, and many others.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Compatible with Many Operating Systems
It works for Windows, macOS, Linux, BSD, and many others.
Pro Beginner friendly
A virtual machine can be set up in minutes if a ISO file to load is already available.
Pro Works well and fast for Windows host and Linux guest
Pro Free and open source
Pro Many free images available
Though most are linux flavors at https://virtualboxes.org/
Oracle's virtualbox site has others.
Pro Can do snapshots
Pro A lot of customization
VirtualBox has multiple virtualization options. Each one may be tailored to the guest operating system’s needs. This makes it especially good on virtualizing older systems, such as DOS, obscure distros, etc.
Pro Convenient and fast access to files and notes
Unclutter lives in the navbar at the top of your screen, and is always accessible. Any files and notes stored in Unclutter can be quickly accessed from anywhere, with just a mouse movement and scrolling down.
Pro Keep desktop clean(er)
Instead of keeping commonly used files on the desktop, you can tuck them away to the top of the screen. This can unclutter your screen, or create more room for more icons if you like quick access to everything.
Cons
Con Lacks video performance
Virtualbox has a hard cap of 256MB of video memory. This could make newer operating systems run slower.
Con Minimal CPU customization
You can only enable/disable certain features. You cannot cap the speed of the CPU, which is required to run systems such as Windows 95.
Con Can't keep visor open when typing in other applications
The unclutter visor will not stay open when working/typing in other apps. Sometimes it is desirable to use the visor to re-type things, it's not possible outside of copying and pasting, or opening and re-closing the visor.