Recuva - Accidentally deleted an important file? Lost files after a computer crash?
DiskWarrior - DiskWarrior, the world's most advanced and highest rated hard disk, hard drive, and disk repair and data recovery tool for macOS, OS X and Mac OS X.
EaseUS Data Recovery Wizard - Advanced data recovery software to do format recovery, unformat and recover deleted files emptied...
321Soft Data Recovery for Mac - The ultimate Mac Data Recovery software with RAID supported.
RStudio - RStudio™ is a new integrated development environment (IDE) for R.
Data Rescue - When Apple's system recovery fails, recover any and all files with Data Rescue 3. This data rescue software will even work if your Mac's hard drive fails to mount.