Most interesting in System Utilities

Free
Untethered jailbreak for all iPhone, iPod touch, iPad and iPad mini models running iOS 7.0 through 7.0.6.
Services menu in Mac OS X lets you perform actions on current selection, such as opening URL, sending snippets, and more.
Free
LiquidMac uses a particle system to imitate liquid and responds to laptop orientation.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.
Free
GUI for creating and editing launchd config files for Mac OS X 10.5.

Top rated in System Utilities

NetRadiant
Free

Fork of GtkRadiant 1.5, focusing on stabilizing q3map2 for reliable map creation.

grainstretch
Free

Realtime timestretching and pitchshifting program with a granular engine.

EvOChamitool
Free

This app helps you download, compile & install Chameleon on any mounted partition.

Sickbeard Launcher
Free

Mac App that makes using SickBeard easy by providing a menubar launcher.

AppList
Free

Mac OS X program that creates an HTML file of the contents of your Applications directory, complete with icons.

Squint
Free

Fasta/Nexus/Clustal/PSquint is an advanced alignment tool combining algorithmic alignment with human editing.

AdTat
Free

Mac text analysis tool for basic & associated word/phrase searches, printing & saving results, and constructing corpora.

Find Truncated Tracks
Free

Script assists with fixing truncated iTunes Match tracks.

Playlist Manager
Free

Manage multiple playlists at once with Playlist Manager: rename, duplicate, delete, export, merge.

TWAIN SANE Interface
Free

TWAIN datasource for MacOS X that provides access to scanners via SCSI/USB.

Hyde
Free

Hyde hides your desktop and icons to help you focus on the task at hand without distractions.

Virtual Volume Utility
Free

Virtual Volume Utility helps manage virtual volumes.

Save Album Art as Folder
Free

This script exports artwork from selected tracks/playlists as JPEGs to their album folders, creating one image per album.

MediaCaster
Free

Open source Mac app for creating podcasts/vodcasts in media labs.

HaxeTitaniumDesktopExample
Free

HaxeTitaniumDesktopExample provides native performance, UI & capabilities for Titanium Desktop with over 1,000 APIs.

iValet
Free

Mac utility with features like a dialer, calendar, clock, and quick reminders.

CAPSLockr
Free

This app helps avoid the frustration of typing with Caps Lock on by showing an indicator when it is active.

SharkLauncher

Free, open-source app launcher for the WireShark network monitoring program on Mac OS X.

Commandes

Execute Unix commands on PPC Macs running 10.3+.

FileChecker JP
Free

File Checker helps you prepare files for AsukaBook production.