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.
Amrev - Amrev is a simple yet robust Data Recovery Solution developed for Mac and Windows OS.
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.
SeriousBit UndeleteMyFiles Pro - UndeleteMyFiles - restore accidentally deleted files from you HDD, USB Flash or SD Card
iBoysoft Data Recovery - iBoysoft Data Recovery for Windows serves as advanced data recovery software to assist users in file recovery from Recycle Bin, BitLocker-secured drives, RAW partitions, corrupted or formatted drives, deleted or lost partitions, etc. on Windows.
MiniTool Power Data Recovery - MiniTool Power Data Recovery is a freemium data recovery tool that works quite well considering the basic version is the only free aspect of the app.