QDirStat vs SizeTrend

QDirStat is free graphical software for examining disk usage and cleaning selected files. It displays directory and file sizes in a tree and colored treemap, with views for file types, size histograms, file ages, and free, used, and reserved space on mounted filesystems. Users can select multiple items and run configurable cleanup actions, including moving items to the trash or deleting them. On Linux systems using dpkg, rpm, or pacman, the Packages view lists installed packages and their files; an Unpackaged Files view highlights system files outside those packages. QDirStat targets Linux, BSD, and Unix-like systems on X11 desktops. Third parties provide macOS binaries and Homebrew distribution. There is no native Windows version, although Docker is suggested for non-Linux systems. A Perl script collects headless-server directory data into a cache for desktop viewing; cleanup then occurs on the desktop. Cache files may reveal directory contents and should be protected. QDirStat is GPL V2 software.

SizeTrend is a Windows application for examining disk use across files, folders, and applications. Its scans show application sizes and file-type breakdowns, analyze file contents, and identify duplicates. Search can filter by name, text, binary content, type, size, or date; duplicate detection compares names, sizes, or content. The free edition includes local disk analysis, saved snapshots, and one What Changed comparison when a compatible snapshot exists. A single-file portable download is available, and files or folders can be compressed in place. Professional adds network-folder scans, scheduled scans, automatic storage history, unlimited snapshot comparisons, and exports to HTML, Excel, or CSV. Scans can be scheduled once or run daily, weekly, or monthly through Windows Task Scheduler. Logged-off scheduled tasks cannot access EFS-encrypted files. SizeTrend Professional costs $69.99, paid once, with no subscription and future versions included. Volume pricing is available from five licenses, including per-license rates for larger orders and an unlimited single-site option.