When comparing TeraCopy vs One Commander, the Slant community recommends TeraCopy for most people. In the question“What are the best power user tools for Windows?” TeraCopy is ranked 17th while One Commander is ranked 38th. The most important reason people chose TeraCopy is:
It deletes files much much faster than built in Windows file manager.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Faster file deletion
It deletes files much much faster than built in Windows file manager.
Pro Can check files for copy errors
TeraCopy can automatically check/verify the copied files for errors, by calculating their CRC or other checksum/hash value.
Pro Seamless shell integration
Pro Skips badly copied files
TeraCopy skips badly copied files during the copying process, and then displays them at the end of the transfer "Verify" with checksum/hash, so you can see which files to re-copy. See also, OpenHashTab for Windows and DeadHash for Windows, Linux, Android.
Pro Free
Free for non commercial use.
Pro Simple and fast
Fast search and filter.
Pro Miller columns
Like Finder from macOS.
Pro Multi tab support
Pro Themes
Light, dark and customizable themes/colours.
Pro Default file manager setup
Can make it the default file manager such that windows explorer stays out of the way for most of the work.
Pro File previews
Pro File / folder filters
Pro Folder views can be saved and applied
Cons
Con Sometimes clashes with 7 zip
From my experience, TeraCopy does not do well in conjunction with 7zips.
It seems to error on some systems when you do a drag-and-drop extract.
Con Folders cannot be sorted by size
Con Cannot access Android device connected by USB
Con Cannot access Android device by FTP
And can never will as this is clarified by developer that this feature will never be added.
Con It doesn't have UNDO function
Very important. When you work with valuable data files, this function can't be ommited.
Con Navigating folders by Ctrl+Tab has considerable delay
Con Browsing Recycle Bin is very slow
Navigating away from Recycle Bin tab and coming back to it reload the Recycle Bin which is very slow as mentioned. Program has an option to open recycle bin in Windows File Explorer, which suggests that developer is aware that opening Recycle Bin is problematic.
Con Confusing
Con Context menu only based on icons
No longer with Onecommander 3.6.43