Bulk Renamer vs File Renamer

Bulk Renamer is a free desktop app for batch-renaming files in a chosen folder, available for Linux, macOS, and Windows. It displays a live preview of each proposed filename before applying the batch. Rename patterns can combine find-and-replace, prefixes or suffixes, sequential numbering, case conversion, and extension changes; find-and-replace accepts plain text or regular expressions. The app loads files from the selected folder but does not include subfolders. Before a batch runs, it checks whether destination names duplicate one another or already exist on disk, and a conflict blocks the operation. Undo reverses the latest successful batch only. That history is kept in memory and does not remain after the app closes. Bulk Renamer is open-source under the MIT license and its free plan costs nothing, with no account required. The maker notes that an unsigned app may trigger standard Gatekeeper or SmartScreen warnings on first launch until code-signing is set up. Infinite Creation describes its free tools as serving people who create, validate, publish, and teach media.

File Renamer is a free desktop application for batch renaming files on Linux and Windows. It is described as Free, Libre, Open Source Software under the GPL-3.0 license, with a free plan priced at free. Its documented workflow covers listing files, previewing changes, and viewing renamed files. The project wiki provides portable installation instructions for Linux and Windows and says this method needs no root or administrator permission. It also documents installation through pip with `pip install io.github.flossapps.file-renamer`, followed by the `file-renamer` command to start the app. Portable installation is reported as tested with Fedora KDE Plasma Desktop, Ubuntu Desktop, and Windows 11. Ubuntu 24.04.4 LTS requires `libxcb-cursor0`. Other desktop systems, including macOS, may work through pip but are untested.