R-Studio is described as 'Offers comprehensive recovery for FAT12/16/32, exFAT, NTFS, HFS/HFS+, and EXT file systems on local and network disks, even if formatted or deleted' and is a popular File Recovery tool in the os & utilities category. There are more than 100 alternatives to R-Studio for a variety of platforms, including Windows, Mac, Linux, BSD and PortableApps.com apps. The best R-Studio alternative is TestDisk, which is both free and Open Source. Other great apps like R-Studio are Recuva, PhotoRec, Digler and Disk Drill.