iDefrag
- iDefrag works as a disk defragmenter and system optimizer.
Grapher
- Graph equations and data sets, and visualise the results on your Mac.
GrandPerspective
- Analyze disk space usage and spot the files that take up the most space.
Grab
- Take a picture of all or part of your computer screen.
File Compare
- File Compare is a GUI front-end to the md5 Unix command.
EasyFind
- Helps you find any file or folder you need within your Mac in just a few moments
DropDMG
- Create and burn the created disk image files to a DVD, CD, or Blu-ray.
Disk Utility
- Create, mount, convert, compressed and encrypted disk images, hard drives, DVD.
Cocoa Packet Analyzer
- Native Mac OS X implementation of a network protocol analyzer.
Cache Out X
- Robust tool that cleans your computer's system, getting to, and deleting the multitude of cache files generated by Mac OS X and Web browsers.
Bluetooth File Exchange
- Makes it easy to share files between your Mac and Bluetooth-enabled devices.
Bluetooth Explorer
- With Bluetooth Explorer you can explore available bluetooth devices around your Mac and show details from your menu bar.
Audio MIDI Setup
- Control settings for all audio going into and out of your Mac.
AP Grapher
- Freeware program for Mac OS X which searches for and displays nearby wireless (AirPort/WiFi) access points along with information about their percent.