FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
aria2 for Android - Port of aria2 for Android with builtin front-end (aria2-webui).
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.