FSlint has been discontinued. Similar apps include CCleaner, which has a free version. Other options are Czkawka, dupeGuru, Duplicate Cleaner and AllDup. There's no shortage of Duplicate File Finders like FSlint, with more than 50 alternatives for Windows, Mac, Linux, iPhone and Android.
Rdfind is a program that finds duplicate files. It is useful for compressing backup directories or just finding duplicate files. It compares files based on their content, NOT on their file names.
Statistics for duplicate files, disk space used by duplicate files and number of duplicate files.
Ukraine
Duplicate Media Finder locates and deletes identical files and similar media (Photos, music, videos) on your PC smartphones (Android, iPhone, ...) or cloud.
France
EU
DupInOut Duplicate Finder helps you reclaim lost storage by deleting duplicate files. It also contains added features to organize files into your own folder structures, and compare two folders for same files, different files and additional files.
Visual Similarity Duplicate Image Finder will find fast all similar and duplicate pictures and photos in a folder and its sub folders. Visual Similarity Duplicate Image Finder uses advanced algorithms to find duplicate photos in a way that a human does.
United States
Anti-Twin is a small software application which compares files, i.e. it searches for duplicate or similar files on your hard disk drive. All similar or identical files that were found can either be sent to the recycle bin or directly deleted.
GermanyEU
Duplicate Detector is a GUI utility for finding duplicate files, allowing you to delete or link them to save space. Duplicate files are displayed and processed on two synchronized panels for efficient and convenient operation.
PolandEU
CyprusEU
Visual disk usage analyzer for Mac featuring byte-level duplicate file detection, detailed storage statistics, customizable folder scans, temporary file removal, undo safeguards, selective cleanup, support for large files, and dedicated modules for managing storage.
Thailand
Fast Duplicate File Finder will help you find fast all duplicate files in a folder and its sub folders. The applications will compare the content of your files so it will find duplicates even if they are using different file names.
United States
Mac utility featuring antivirus protection with 99.7% detection accuracy, adware removal, ID theft monitoring, duplicates finder, and smart uninstall tools. Enhances performance by managing startup items, freeing RAM, updating apps, and optimizing disk space. Offers real-time threat detection and tech support.
United Arab Emirates
