

KisMAC is an open-source and free stumbler/scanner application for Mac OS X.
10.6 / 10.7
Popularity: 98%
This utility lets you test the Active Matrix Display of your PowerBook or iBook for stuck...
OS X
Popularity: 96%
Disk First Aid is an easy to use utility that verifies and repairs some problems that may...
Classic

Added Dec 26, 2000
Popularity: 95%
SCSI Probe determines the type, version and product name for every device connected.
Classic

Added Apr 16, 2001
Popularity: 93%
TattleTech is a much improved version of the old TattleTale.
Classic

Added Jun 22, 2002
Popularity: 87%
ToolWiz Mac Boost is the ultimate and best used cleaner application for keeping your Mac...
10.7 / 10.8
Popularity: 78%
GURU is an acronym that stands for GUide to Ram Upgrades.
Classic

Added Jul 18, 2000
Popularity: 75%
Slot Info tests and reports information on all cards that are plugged into your Macintosh...
Classic

Added Jul 9, 1998
Popularity: 71%
This program scans for files with bad creation or modification dates, and fixes them.
Classic / OS X
Popularity: 65%
Gives control over PowerBook's or MacBook Pro's backlit keyboard (if available).
OS X
Popularity: 64%
Search by code or topic, or just browse. Several hundred codes are included, some with...
Classic

Added Dec 1, 1998
Popularity: 53%
ResEdit is Apple's own utility for changing a file's resources.
Classic

Added Jul 14, 1999
Popularity: 51%
MiniUsage displays various data like CPU usage, amount of network flow, battery status and...
10.5 / 10.6 / OS X / 10.7
Popularity: 36%
Has your Mac become slow and unresponsive? Has it lost some of the zing it used to have?
10.10 / 10.9 / 10.1 / 10.2 / 10.3 / 10.4 / 10.5 / 10.6 / OS X
Popularity: 35%
Mac is undeniably an efficient device you can rely upon for all your computing needs, but,...
10.10 / 10.9 / 10.7 / 10.8
Popularity: 33%
Installer Observer determines exactly what an installer has done to your system.
Classic

Added Aug 28, 2000
Popularity: 31%
TechTool Lite is a diagnostic tool that will rebuild your desktop, zap your PRAM and...
Classic

Added Sep 11, 2002
Popularity: 29%
A free utility to reveal some useful hidden features and maintenance tools.
OS X
Popularity: 22%
This is a simple AppleScript that tests two things: 1.
OS X
Popularity: 15%
TM Error Logger is a Macintosh Time Machine error-reporting program.
OS X
Popularity: 13%