ownCloud is a free and opensource file sync and share app which is self hosted.

SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats directly in Windows Explorer by using Pierre-e Gougelet's GFL li…

DupKiller is a duplicate file finder.

One Commander is file manager for Microsoft Windows with improved functionality, re-imagined user interface and experience of navigating filesystem.

Anti-Twin is a small software application which compares files, i.e. it searches for duplicate or similar files on your hard disk drive.