PhotoRec is a free and open-source file carver data recovery software tool designed to recover lost files from digital camera memory (CompactFlash, Memory Stick, Secure Digital, SmartMedia, Microdrive, MMC, USB flash drives, etc.), hard disks and CD-ROMs. Developed by CGSecurity
License: Open Source
Disk Drill is a user-friendly, feature-rich data recovery tool ideal for casual users, while PhotoRec, being an open-source tool, is suited for advanced users who prefer command-line interfaces and do not mind a steeper learning curve.