Do you have crashed, corrupted or non-mounting hard drives? Was a hard drive accidentally reformatted? Do you need to recover previously deleted, damaged, or missing files?
Enter Data Rescue
I’ve worked with many different data recovery apps, and I’ve had the most luck with Data Rescue. It’s especially good at recovering files that were accidentally deleted. They have a free version with limited functionality, but it’s a great demo to test the effectiveness of the full-featured app.