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.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
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.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
321Soft Data Recovery for Mac - The ultimate Mac Data Recovery software with RAID supported.
LightShot - The fastest way to take a customizable screenshot.