When comparing Double Commander vs Q-Dir (the Quad Explorer), the Slant community recommends Q-Dir (the Quad Explorer) for most people. In the question“What are the best file managers for Windows?” Q-Dir (the Quad Explorer) is ranked 5th while Double Commander is ranked 13th.
Ranked in these QuestionsQuestion Ranking
Pro Multi-platform (Linux, Windows, MacOS X)
you can use same tool in all desktop OS enviroments
Pro Source code is available (true free software)
If the developer loses interest there is at least the possibility that someone else will pick up the torch.
Pro Closely follows TotalCommander UX
For instance, the 'Settings | Layout' pane is quasi-identical to TCs.
Pro Powerful tcmd-like search tool (alt+F7)
Lots of options allow you to configure DC the way it suits you best: Tools, Fonts, Colors, Hotkeys, Mouse, Fileviews, Plugins, Layout, Toolbars, Tabs, Icons etc.
Pro Source Code written in (Object) PASCAL
It's all a matter of perspective. I'm not for an argument about IDE's, frameworks etc, but to me that's a big plus. I think it should be a tie, it's either a pro or a con or should that be neither a pro nor a con. It just depends on context.
Pro Directory Hotlist
Save shortcuts to folders. Organize them in a treeview with submenus. Define a name and sorting for each entry.
Pro tcmd-like multi-rename tool (CTRL+M)
Pro DC uses TCmd plugin API
so you can use documentation from Total Commander for writing plugins. WCX (packer), WDX (content), WFX (file system), WLX (lister)
Pro It's that good, you can replace tcmd on windows too
Pro Very sophisticated
Although it is lightweight and simple to use, it can do very sophisticated tasks, like copying files from directories which have a certain extension or file size or have a certain text pattern in them. Also, it's very customizable and stable.
Pro You can view 4 windows simultaneously
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 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 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).
Pro You can use tabs in every window
Pro Very customizable
Con Much slower on Linux and Mac than on Windows
Con Apparently only one developer
Con Freeze after mouse double-click on directory list item
Con Can't edit files on remote FTP servers
Con Source code written in Pascal language
But this does not affect users negatively. It's just programmers problem