Most interesting in System Tools

Free
A free app for Mac, by Apalon
A free program for Mac, by Pocket Bits LLC.
Realistic and Flexible Timekeeping Application for Personal Computers
A simple timer app for your desktop
The code-reading utility app

Automation

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Notational Velocity
Free

App that stores/retrieves notes, providing a nonconformist solution to mental blockages & retrieval handicaps.

Task Till Dawn

Manage processes and tasks on a schedule.

MacUpdater
Free

MacUpdater keeps all apps up-to-date automatically, so you don't have to search, download, install and clean up updates manually.

CNET TechTracker
Free

Detect and download updates for all of your installed software.

FileZilla
Free

FileZilla (ported from Windows) is a fast and reliable FTP client and server with lots of useful features and an intuitive interface.

Lingon 3
Free

"A great utility...its UI is awesome" – Dave Hamilton...

Backup & Restore

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DMG Canvas
Free

Generates disk image files with just a few clicks.

Get Backup RE
Free

Automate and simplify data backup operations.

MacDropAny
Free

This app helps you back up files to various Cloud service accounts.

Carbon Copy Cloner
Free

Carbon Copy Cloner backups are better than ordinary backups.

JustCloud
Free

Backup important files from your Mac and upload them on your Cloud account.

TimeMachineEditor
Free

Schedule Time Machine backups with just a few clicks.

Top rated in System Tools

MkConsole
Free

A useful app that displays logfiles on your desktop.

dvdisaster
Free

dvdisaster stores data on CDs/DVDs/BDs to enable full recovery even after read errors have developed, allowing users to rescue complete data on media.

PCMan X
Free

Free BBS client for telnet and double-byte characters, with tabbed browsing, auto-login and ANSI editor for colored text.

Uninstall Quick Editor
Free

A fast, lightweight text editor for low-end hardware that can handle multiple documents.

Mighty Mouse Installer
Free

Mighty Mouse lets you customize your cursors with style and animation without modifying system files.

CloneKeys
Free

CloneKeys sends duplicate keystrokes to multiple applications, useful for multi-boxing in games like WoW.

PocketMac for BlackBerry
Free

Sync your Mac and BlackBerry with PocketMac for Blackberry.

CalendarX
Free

Plone-based CalendarX is a feature-rich calendar & event CMS, available via egg or tarball.

ErrorApp
Free

ErrorApp tracks errors from apps and reports them, combining all occurrences into one report.

VT Desktop Alerts
Free

Virginia Tech's emergency notification system can be accessed over the Internet with the VT Desktop Alerts program.

cocoaPTT
Free

AppleScriptable app to provide PTT for apps without native support.

NeXT Tools
Free

App with many tools for Bricx Command Center IDE, including Direct Controller, Diagnostics, Watch, Piano, Joystick, etc.

InputSwitcher
Free

Utility software for Leopard that saves input source states of each application when restarted.

iPiece
Free

iPiece's magnifier window appears with a hotkey or double-click of the eyeglasses icon, allowing for closer inspection of items.

SpectraView Profiler
Free

Automatic hardware calibration via DDC/CI interface.

GridStuffer
Free

Submit multi-task jobs with a simple GUI and easy result retrieval.

UPPAAL
Free

Tool for modeling, simulating & verifying real-time embedded systems, esp.

Adobe Dock
Free

One application in a series of applications I am making to reduce Dock clutter and use very small applications to take the place of many others.

WPMacPPC
Free

WordPerfect for Mac won't run on OS X, but can run in an emulated Mac, a virtual computer running System 7.

Fuzzlecheck 3
Free

Fuzzlecheck 3 helps production managers create detailed breakdown sheets...