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Add to SafariWhen comparing VirtualBox vs Q-Dir (the Quad Explorer), the Slant community recommends VirtualBox for most people. In the question“What are the best power user tools for Windows?” VirtualBox is ranked 3rd while Q-Dir (the Quad Explorer) is ranked 48th. The most important reason people chose VirtualBox is:
VirtualBox is available for free with source code available [here](https://www.virtualbox.org/browser/vbox/trunk). A "VirtualBox Extension Pack" that includes virtual USB 2.0, VirtualBox RDP & PXE boot support is available only under a commercial license.
Specs
Question Ranking
Pros
Pro Free and mostly open source
VirtualBox is available for free with source code available here. A "VirtualBox Extension Pack" that includes virtual USB 2.0, VirtualBox RDP & PXE boot support is available only under a commercial license.
Pro Highly manageable multiple windows
Every window can be separately customized. You can choose between different views from 1 to 4 windows, and every window can have multiple tabs!
Pro You can view 4 windows simultaneously
Pro You can use tabs in every window
Pro Portable
Pro Free
Pro Does not use a lot of RAM
Q-dir with 4 windows and with 4 tabs in every window uses only 39mb of RAM on Win10x64.
Pro Fast and stable
Pro Very customizable
Pro Q-Dir allows you to save folder combinations as a favourite to open any time
Up to 64 folder combinations can be saved in a favorite, since each of the four windows is equipped with tabs (ie 4 x 16 tabs 4 x Tree View plus 4 x Address Bar).
Cons
Con Inferior performance
Apart from second-class performance in virtualization, there are some visual glitches with Windows 8.1 on Mavericks.
Con Confusing interface and lacking usability features
VirtualBox might be a bit confusing for beginners - it requires an understanding of a lot more technical details than other VMs.
Con Sometimes may have bugs
Con Needs modern UI design
Con No search
Con Does not work with Quicklook
