Disk Drill is available in a Free/Basic version and a Pro version for $89.
Disk Drill is a Mac data recovery software designed natively for Mac OS: easily protect your files from accidental deletion with Recovery Vault and recover lost data from Mac disks. When something is deleted Recovery Vault makes it possible to recover not only the file itself, but also its properties, such as original file name, location, etc. So you will always be able to recover data from Mac files system (HFS/HFS+) and FAT32 partitions. Disk Drill also includes more...
- [New] Deep Scan adds support for reconstructing .PSAFE3 (Password Gorilla storage files), .TREC (Camtasia Studio 8.4+ recordings), .JKS (Java KeyStore), .NGRR (Guitar Rig sound files)
- [New] preliminary support for Rootless security mode in OS X 10.11
- [Improved] UI refreshing when recovering and saving recovered items
- [Improved] previewing of found items more...
- OS X 10.6.8 or later