When comparing jZip vs WizTree, the Slant community recommends jZip for most people. In the question“What are the best power user tools for Windows?” jZip is ranked 4th while WizTree is ranked 16th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Totally free
Pro Sleek interface
Pro Exceptionally fast for NTFS drives
Because it reads the master file table (MFT) directly from NTFS file system.
Pro Free
There is no limitation to using it.
Pro Multiple view such as tree view, tree map, extension view, file view
Unlike other similar apps, which usually only offer single view, this app offers multiple views.
Pro Handles "hard linked" files correctly - doesn't count them more than once
WizTree is faster and much more accurate than all the others as it properly handles hard linked files (doesn't count them more than once) so the total allocated size reported by WizTree will actually match the space used on the drive as reported by Windows.
Cons
Con Default installation options include adware
You can avoid this if you select your options carefully at installation time
Con Avast! Antivirus automatically deletes the installer because of the optional adware installer included in it
Con Intended for NTFS only
It'll work with any other file system but with the same speed as any generic space analyzer.