additemtodock is command line utility for adding items to the dock. It is aimed at system administrators.
AJoiner is a small, lightweight application for joining split files. These files can be in any format, as long as they use Mastersplitter's naming convention (.001 - .999).
A program for aliasing removable disks so they can be searched when not mounted.
(commercial) APC Tracker is software for connecting Uninterruptible Power Supplies (UPS) from APC with Mac computers and servers.
AppCleaner allows you to uninstall your apps more easily. It searches the files created by the applications and you can delete them quickly.
AppLaunch is a version of the common ?Run? or ?Launch? dialogs provided by other operating systems and window managers such as Windows or KDE. It consist of a input box where the user enters a command line that will be passed to the applications workspace.
Aqua For Command-Line Tools
(shareware) provides point-and-click user interfaces for controlling the command-line tools shipped with Mac OS X
Auto-Lock is a small utility that basically is a daemon that will execute a screen lock in gaps specified or exectute a screen lock when a screen saver is activated.
Avosmac2ISO creates an ISO image from a folder
Backdrop is a simple utility to fill your screen with a white window. This is useful for taking screenshots without having to clean up your desktop.
basE91 is an advanced method for encoding binary data as ASCII characters. It is similar to UUencode or base64, but is more efficient. The overhead produced by basE91 depends on the input data. It amounts at most to 23% (versus 33% for base64) and can range down to 14%, which typically occurs on 0-byte blocks.
BBAutoComplete adds word auto-completion to scriptable applications. You type the start of a word, press a key, and BBAutoComplete types the letters to complete the word.
Black Light allow you to invert the colors on your screen. This is done by inverting the gamma curve of the screen. When you open Black Light, the screen is automaticly inverted. Colors are restored when you quit. You can click on Black Light?s icon in the Dock to toggle between the two states.
Cakebrew is the most convenient way to use Homebrew for your daily tasks! It does for Homebrew what Synaptics does to Linux package managers.
Can You Raed Tihs?
Can You Raed Tihs was developed to help you explore the interesting phenomenon that people do not look at a word one letter at a time but at the word as a whole.
cCSVParse is a fast and simple class for Cocoa to simplify parsing of CSV files. You could use this in C or C++ programs with little effort.
cdto is a mini application that opens a Terminal.app window cd'd to the front most finder window. This app is designed (including it's icon) to placed in the finder window's toolbar.
checkSum+ will handle md5, sfv & cvs files. These files store "checksum" information about files, and will allow this and other applications know if the related files are or not corrupted.
ChecksumUtilityX is a small application to analyze the unique arrangement of bytes within a file. This is useful to quickly determine if two or more files are identical.
(shareware) ClipDoubler supports text, pictures, sounds, movies, and many other resources. ClipDoubler can both open and save Clipping files, and it can create internet shortcuts as well. You can put the contents of TEXT and PICT files onto a clipboard with a simple drag and drop.
CLIX (Command Line Interface for OS X) is a Cocoa application that harnesses the power of Unix.
CloneEject is a simple Applescript drag and drop application that creates an invisible file named ".metadata_never_index" at the root level of any unlocked drive dropped on it. Then it ejects the drive.
Combine PDFs lets you arrange a new PDF with pages from another PDF and some picture files.
Copy and Paste Extreme
Copy and Paste Extreme is an application for sharing your clipboard between multiple machines.
(commercial) CuteClips2 keeps track of up to 12 clips you recently copied. You can easily access it by just pressing the shift key additionaly to the standard cmd-v.
This utility helps Mac users make file or folder (as a group of files or folders) visible or invisible.
DasBoot makes an iPod, flash drive... a bootable device to run diagnostics or alike.
Dasher is an information-efficient text-entry interface, driven by natural continuous pointing gestures. Dasher is a competitive text-entry system wherever a full-size keyboard cannot be used. Read more
a simple application that allows the user to graphically edit its complete defaults settings. The application is a simple GUI to the NSUserDefaults OPENSTEP class. One can add/remove or modify the defaults. Only defaults created and used by OPENSTEP applications will be displayed
DePC is a small tool suite for automatically setting the Mac type & creator codes of files, based on Finder settings & their extension. Includes a CLI app for scripting and power users, as well as a GUI app for easy configuration and use.
(commercial) DeskShade lets you hide/show everything on your desktop with the simple press of a hotkey!
DisctopPro displays inserted CD or DVD on your desktop. Disctop consists of two parts, a preference pane to control Disctop's behaviour, and an invisible daemon application that runs in the background. The daemon is informed if the status of your optical drive changes by the DiscRecording framework, and acts accordingly.
Dock Locker Varsity
A simple way to keep icons from being dragged out of the Macintosh OSX dock. Whether on accident or (as in our case) students just love to watch the "poof" of disappearing icons, Dock Locker will keep your icons in place until the dock is unlocked.
Dockables provides you with one-click system event access right from the Dock in OS X.
DockReboot restarts the Dock.
(shareware) allows you to search for duplicate files by name, creation date, modified date, size, type, creator, extension, contents and more. In addition, this new version looks for MP3 duplicates by their tags: song name, artist, album, genre, year and content
DownloadCheck is a simple utility that checks for applications in your Downloads folder. It was written in response to the MP3Concept Trojan horse release of April 2004.
Drop?PS is a PostScript downloader; with it, you can transmit text files containing PostScript commands to any AppleTalk-connected PostScript printer.
is a small Cocoa application to delete those pesky .DS_Store files.
(commercial) DTP Multicalc calculates picas, points, inches, cms/mms and fractional inches. Activate the field by clicking the field or if the fields are empty, you can activate the field also by clicking the field name.
Dustman will search your disks for Network Trash Cans and erase them without mercy
DVD Spanner creates archives of large directories spanning multiple disks.
(commercial) Easy Card is a little application which lets you create attractive, professional-looking greeting cards first time out, quickly, and with a minimum of hassle.
eDocuments manages your documents and pictures. Buy a scanner, scan everything you own (paperwork, fotos, etc), burn it to a CD, then browse it easily with eDocuments.
EdPAD is useful utility that allows users to create, edit and validate Portable Application Description (PAD) files.
escapepod is a little application that lets you terminate the frontmost application by hitting Control-Alt-Delete, terminate the Dock by hitting Shift-Control-Alt-Delete, or do a force-logout by hitting Command-Control-Alt-Delete.
File List is a batch file renamer, and a playlist generator. File List currently supports the following basic renaming routines: Find and replace (including support for regular expressions); Number sequentially; Change case; Set extension; Add prefix/suffix; Remove/insert characters.
a utility that allows you to split large files in smaller pieces of user-defined size. It can split files of any size, even over the 2Gb limit
Finderella is a simple Macintosh Finder replacement for children whose parents do not want them to mess up their hard disks. It also allows parents to limit the applications that their child can use.
Fink is an attempt to bring the full world of Unix Open Source software to Darwin and Mac OS X. Packages are downloaded and built automatically and installed into a tree managed by dpkg.
an open-source, graphical user interface for the Fink software packaging system for Mac OS X. It provides an intuitive front-end to the Fink command-line tools for downloading and installing Unix software
FMenu is a program for Mac OS X and Facebook that sits in the menu bar (near the clock) and provides notifications about various events. In addition, it provides a menu to easily access common Facebook pages and keeps a count of your messages, pokes, events, friend requests, wall posts, and photo comments.
Focus shows a floating icon of the front-most application with an optional clock.
foldermerge is a utility to merge two folders contents.
FreeDMG allows the user to perform drag-and-drop disk imaging on the fly. Both the program's window, and the dock icon can be used for drop imaging. There are currently twelve (12) compression form ats that the user can select from (UDZO, UDCO, etc.).
FreeEngl is an open source spell checker developed with a reduced version of the CMU dictionary. The software takes an example text document and shows any spelling mistakes
Function Keys Mapper
Function Keys Mapper allows you to quickly open any application, file or folder with the function keys of your keyboard.
Gamma Control is an application that gives you the possibility to adjust the gamma correction curve of the screen. Use the application to calibrate the screen for new ambiant conditions without having to use the ColorSync Calibration Assistant.
Get File Path
Get File Path allows you to copy to the clipboard the path of a file or folder dropped on it, after automatic application of various programmable transformations.
GlobalPreferencesLocker prevents kernel panics on logout when using Mac OS X 10.2.3 on portable Macs. This issue has been solved with Mac OS X 10.2.4.
(shareware) a replacement for the Terminal application which ships with MacOS X. It's made to be faster, and to support more common terminal features. It supports full ANSI colors, all vt102 protocol, all DEC function keys, and a selection of useful xterm sequences
a Cocoa application for MacOS X that provides a graphical user interface for the Unix grep command. You can use it to quickly search text files or a group of text files on your computer and report the results various ways. Searching can be done using Unix regular expressions
hardlink is a simple command-line utility that implements hardlinks.
HexDecBin converts from base-16 to base-10.
This program uses the standard functionality of the operating system to make folders and files invisible. For the majority of users, any folder of file made invisible becomes inaccessible with standard Finder's windows browsing but please be warned that there are some applications that let you open also invisible files and that experienced users could, with particular expertise, gain access to a folder or file made invisible.
Hitup records the time spent on your machine without restarting and informs a Web site with classification.
converts HTML files and web pages into indexed HTML, PostScript, and PDF files suitable for on-line viewing and printing. HTMLDOC can be used as a standalone GUI application, in a batch document processing environment, as a web-based report generation application, or in embedded environments to support printing of HTML content
a customizable search engine helper for Mac OS X. It?s easy to use: type in some text to search for, choose a search engine, then hit the Return key
ICeCoffEE lets you Command-click to open URLs in Mac OS X applications including TextEdit and Terminal. It adds the ?Services? menu to some text fields? contextual menus, and optionally to the menu bar as well.
iColors is a simple application for Mac OS X to convert colors to and from the hexadecimal standard.
iLingual helps you localize other applications. There are some localizing tools like AppleGlot, but they are too complicated and too difficult to use.
iloc is a command-line tool for creating Mac OS Internet Location files (e.g., .webloc, .ftploc, etc.). It is used like so: iloc url [outfile] . If outfile is unspecified, it will use the input URL with all colons and forward slashes replaced by hyphens.
a simple tool that does its work on the background. It checks every second, or a time you specify in the preference panel, the position of all icons and tries to arrange them in a grid
Invisibility Toggler empowers you to view invisible files in the Mac OS X Finder. Unlike similar solutions, Invisibility Toggler toggles file and folder invisibility instantly without first annoying the user with a dialog box. Run it once to allow you to see invisible files. Run it a second time to hide invisible files. It's that simple!
Just double-click the InVisibles icon, click "Visible" to make all of the invisible files become visible files.
iSearch does a search and replace across a folder full of files, using another text file as its control. That is to say, you make a plain text document with the first line being what you want to change and the next line being what you want that to change into. You
iSFV is an easy to use integrity checker for SFV files. Use it to test for corrupt files in packages that come with SFV files.
JellyfiSSH is a simple bookmark manager for connecting to *NIX boxes like BSD/Linux etc via Telnet or SSH 1 or 2. You can set preferences for each bookmark including the terminal colours, fonts, window size, transparency and default login.
JES CopyLargeFile allows you to copy files larger than 2 GB over a network under Mac OS 9 or X.
jfSnip is a tool to manage and edit your collection of text clippings. You can insert your snippets in any open application and access them easily from your status bar. Use it to answer your email, write HTML, and more. It is a universal binary and compatible with Leopard.
(shareware) Key Pad is an application providing centralized storage of passwords, account numbers, and many other types of easily forgotten personal information.
KisMAC is a stumbler application for Mac OS X that puts your card into monitor mode. Unlike most other applications for OS X, it is completely invisible and sends no probe requests.
(shareware) Lights Out is an application designed to give users more control over Apple's Energy Saver. It helps solve the problem of Energy Saver insomnia. Many software packages, scanners, and other peripherals interfere with the Mac's normal sleeping patterns. Lights Out offers a secondary idle timer to put your Mac to sleep even when Energy Saver fails to do so.
lineStripper does just that! Basically it opens a text file and takes out all duplicate lines where ever they may be in the file.
Lockbox is a secure password management utility. This utility is simple and more intuitive for personal password storage than Apple's Keychain utility, which is better suited for Application specific needs.
Log Application Usage
Log Application Usage writes launch and quit times of all applications to the file "Log Application Usage.log" in the preferences folder.
Logintime in menubar
Logintime in menubar shows the login time of your Mac in the menu bar.
Logitech Control Center
The Logitech Control Center (LCC) is designed to support Mac OS X, and allows you to take full advantage of your Logitech keyboard, mouse or trackball. The LCC is an easy-to-use tool that gives you access to useful shortcuts and one-key actions that will make your time at the computer or on the Internet more productive, comfortable and enjoyable.
MacHacha splits archives into smaller parts and join them when requested. Currently, both split & join: Hacha, WinSplit, FastSplit, Split&Concat, HJSplit & MacHacha. It supports Hacha's newest version and joining of Windows MasterSplitter and RAR normal and multi-segment files.
MacLibre is an Open Source Software Distribution. It's simple, intuitive with applications you need
MacOSD is a visualization frontend for PBButtonsD, the button and power event daemon used for Apple computers. It utilizes Evas with its anti-aliasing and alpha-blending canvas capabilities for rendering. The less-eye-candy-rich Xosd can also be used to render shaped windows that work over video overlays.
MegaBlanker is a utility to blank CD-RW and DVD-RW/DVD+RW discs for Mac OS X, Intel and PPC versions. It is able to blank some discs that the finder will not recognize, offering you the ability to fix some rewritable media that would otherwise be a coaster.
MemoryStick provides a graphical display of your RAM usage under Mac OS X. You can instantly see how full your RAM is getting. Optionally uses sound to signal pageouts and/or an increase in your swapfile count.
MoinX is a Mac OS X desktop Wiki, built with ease of use in mind and rich with features. MoinX gives you a full blown and unmodified MoinMoin wiki without forcing you to run a full blown web server. Instead MoinX is bundled with the high performance Twisted webserver.
Monolingual is a program for removing unnecessary language resources from Mac OS X,
in order to reclaim several hundred megabytes of disk space.
(shareware) provides quick access to your applications and documents that you had with MacOS 9
MothersHelper helps keep track of what application is frontmost.
MountnuoM is a graphical user interface for diskutil to mount / unmount volumes.
Mouse Distance Measurer
Mouse Distance Measurer allows you to display the distance your mouse travels all day long.
Mouse Position Menu
Mouse Position Menu allows you to display your mouse position in the menu bar.
msort is a program for sorting files in sophisticated ways. It was originally developed for alphabetizing dictionaries of "exotic" languages, for which it has been extensively used, but is useful for many other purposes. msort differs from typical sort utilities in providing greater flexibility in parsing the input into records and identifying key fields and greater control over the sort order.
NameChanger is designed for the sole purpose of renaming a list of files. To install just download the disk image, open it and drag the app to your Applications Folder.
nibTranslate is a little Cooca application that provides a graphical front end to nibtool, Apples command line application for nib manipulation. It allows translation and generation of multiple nib files using a single translation dictionary for each language. nibTranslate is based on mmalcom Crawfords iTranslate application.
nrg2iso extracts ISO 9660 files from Nero's proprietary .nrg format. This is a GUI wrapper for the linux command line nrg2iso v0.4 tool.
OldFolder is an application that revives the pre-Leopard dock's hierarchical menu interface for folders.
(commercial) a Mac OS X utility for quickly finding and deleting big, useless files and thus making space on your hard disks. OmniDiskSweeper makes this easy by highlighting the biggest files on your disks, and by noting which files are used by the system, so you don't accidentally delete important files
OnyX is a multifunction utility (maintenance, optimization, and personalization). It allows you to run misc tasks of system maintenance, to configure certain hidden parameters of the Finder, Dock, Safari, Dashboard, Exposť, Disk Utility... to delete cache, to remove a certain number of files and folders that may become cumbersome, to see the detailed info of your configuration, to preview the different logs and CrashReporter reports, to check the Preferences files and more.
OSx360 is an Xbox 360 disc image stealth checker and burner. It sets the correct layer break and verifies the file before burning an Xbox 360 disk image.
(commercial) PDFKey Pro lets you easily recover from lost copying and printing PDF passwords. PDFKey Pro makes an unlocked copy of your PDF, without requiring you to enter a copying or printing password.
Permanent Eraser is the answer to ensure that your files have been securely removed.
Pfinder is an application which symulates the new Mac OS X Panther Finder interface for pre-Mac OS X Panther versions, and especially for Mac OS 9 users whose Macs can not be upgraded to Mac OS X due to hardware restrictions.
piPop is a menu based utility to help make your workflow smoother. Place shortcuts to all your most commonly used folders in piPop's root menu and access volumes and running applications via a simple and very customizeable interface.
Pixel Tester helps you to detect any dead pixel on your screens or LCD displays.
Plain Clip is a small application that removes formatting from text which is on the clipboard. It's designed as a faceless application (no GUI), which makes it ideal for triggering it from a hotkey and launcher applications such as ?Spark?, ?iKey?, ?LaunchBar?, ?QuickSilver? or ?Butler?.
Plain Clip Plug
Plain Clip Plug is a plugin for Spark which removes any formatting from text which is on the clipboard.
Pref Setter is an application for viewing and editing OS X preference (plist) files.
PrefEdit is a utility that allows you to inspect and edit all preference settings for Mac OS X applications. The settings are displayed in a browser and can be edited by simple point-and-click operations. You can also do a full-text search on all settings, or clean up unused entries of applications that have been uninstalled.
Preferential Treatment checks your preference files (both in your user's preference folder and the system's preference folder) for corruption by using the "plutil" command line tool.
Prefling does one job: It lets you open system preference panes. Fast. Sitting in your Dock, it shows you a menu with all the preference panes installed and active.
PullTab allows you to reclaim the Command-Tab and Command-Shift-Tab keystrokes from the MacOS X Dock. The reclaimed keystrokes can then be used in other applications, including third-party application switchers.
QuickFind is a simple way of finding what you want on a number of websites without having to retype the search terms and several web addresses.
Quit! is an applet for quickly quitting all open applications (including OS X applications & the Classic environment) automatically when run.
Ruby appscript (rb-appscript) is a high-level, user-friendly Apple event bridge that allows you to control scriptable Mac OS X applications using ordinary Ruby scripts. Appscript makes Ruby a serious alternative to Apple's own AppleScript language for automating your Mac.
Renamer4Mac makes it really easy to rename a big number of files according to a preset pattern.
(shareware) Renicer is designed to run in the background, and automatically prioritizes whatever application is in front. It also ups the priority of the Finder, Dock, and Window Server.
Using Resolution Calculator you can see which resolution you should use in your images for specific screen frequency, pixel dimension of the picture and document size in specific resolution and in any color depth.
Rudix for power users is a collection of pre-compiled and ready to use Unix compatible software (packages) which are not available from a standard installation of Mac OS X (or Darwin) but are very popular among Unixes environments like GNU/Linux and FreeBSD. For example, software like wget, ncftp, lynx and many more command line tools.
Screen 640x480 is a utility for web designers to see which part of the screen their website should be viewable inside, so it can be viewed on older Macs.
ScreenCleaner Pro alters the gamma of your monitor to compensate for any monitor degradation.
SenChecker is designed a user friendly way to detect and check if their machine is capable of running LMU and SMS aware applications.
forces the system layout to be the one we choose, independently from what the other startup items ask
a small utility that allows you to view the "man" pages of the underlying Unix core, execute shell commands, and view some system configuration files
(commercial) Shellac allows you to run powerful UNIX tools within Mac OS X Automator workflows. It includes cat, cut, grep, head, paste, sort, tail, uniq, wc, and more.
SDT was created to fill the author's need to shutdown a mac after a long unattended backup completed.
SleepTight provides a simple way to lock your machine when it goes to sleep or lock from a keyboard hotkey.
Slife is an application for the Max OS X that lets you visualize and organize your computer activities. Slife observes your every interaction with applications such as Safari, Mail and iChat and keeps tracks of all web pages you visit, emails you read, documents you write and much more.
Smart Scroll X
(shareware) brings new scrolling options and enhancements to Mac OS X
(shareware) Smart Trash enhances the functions of the Mac OS X trash by adding several menu options including: selective file deletion, extensive logging, the ability to empty the trash on specific volumes, and more.
SMViewer is a utility to visualize 3D models saved in the DXF format.
allows users to add any application on their drives to a watch list, and to perform customizable actions when those applications are launched or quit
SpotInside searches documents and preview their contents with keyword highlighted.
SpotlightIndexer will allow the user to easily index folders that may not currently be searched by Spotlight.
StartupProfiler is an application that will allow the user to gather Apple System Profiler information quickly and easily. The user can automatically or manually print, save, and display a wider range of options than System Profiler.
(commercial) Your digital life has a lot of statistics: incoming mail, appointments, disk space. Stattoo "tattoos" stats right on your desktop picture: out of the way, but always handy.
A NeXT Step style main menu for Cocoa Mac OS X applications. Especially useful with a multi-monitor Mac.
Super Shut Down
This is a little application that you can lauch instead of using the "Shut Down" submenu of the Apple menu.
SyncTwoFolders synchronize two folders.
TC2 Remote is a utility to control Pro-Lite TrueColorII Digital LCD displays.
Term's Little helper
Term's Little helper gives you the power of the Terminal to access information about disks, network, processes, logs, system and more like the fine feature that translates to obscure BSD error messages into clear understandable text.
Termings is a small plugin for Terminal.app, it provides shortcuts to start new windows or tabs with the same settings as the one in use ( ?Y, ?U ) and a status menu for starting new shells or tabs
TextClip's are created, whenever you drag text to the Finder or Desktop. Unfortunately Apple forgot to write/include a Spotlight Importer for TextClip's. TextClipping is that missing importer, that adds spotlight-search for all your TextClip's
Therefore I am
a utility to fix the iSync beta installation
Tidy-It gathers up messed up screen shot tiffs, jpegs, gifs, downloaded archives such as tar, gz, tgz, sits etc and puts them into new folders by types.
Timed Screenshot is an application to make screenshots every few minutes to log what is going on.
TinkerTool is an application that gives you access to additional preference settings Apple has built into Mac OS X. This allows to activate hidden features in the operating system and in some of the applications delivered with the system.
ToggleClassic is an applet for quickly toggling the status of the Classic environment in OS X. If Classic is active when the script is launched, the Classic environment will be shut down. Likewise, if Classic is inactive when the script is launched, the Classic environment will be started up.
(commercial) TotalFinder works like the original Finder but adds tabs, dual panel mode, folders on top and other useful features.
Trash Locked Files
Trash Locked Files is a program for trashing locked files in the Mac OS X trash icon.
(shareware) Trash X is a fully functional trashcan for Mac OS X. Extremely simple to use, it functions just like the classic Mac OS Trashcan - files and folders dropped on it are moved to the trash, and disks droppped on it are ejected.
Tree Size is a tool which calculates the disc space taken by folders.
Type And Creator Changer
Type And Creator Changer allows you to change the type and creator of any file manually or like another file.
uControl is a utility that extends the MacOS X human interface event system (HID). Originally created to offer limited keyboard remapping, uControl has grown to become a powerful utility for tweaking MacOS X.
UDF Media Reader
UDF Media Reader is a small Cocoa application that reads disks created by packet-writing applications like Adaptec DirectCD.
UnicodeChecker is an application that displays information for every code point from the Unicode Standard. For a given number, UnicodeChecker will display that character along with its UTF-8, UTF-16 and UTF-32 encodings, XHTML entity, Unicode Name, mapping information and much more.
UnPlugged is an application to notify when the power cord of the Mac is unplugged or plugged in. Notifications are done using Growl, or with a Alertwindow, when Growl is not installed.
Visibility is a simple and elegant utility for Mac OS X that lets you access invisible files and folders in three ways: Open any file from the standard system dialog, delete any file from the standard system dialog, and show and hide invisible files and folders in Finder.
Wake Assist automatically clicks the mouse a few seconds after waking from sleep. The mouse click is enough to nudge a stuck Mac to wake up fully.
Weather Vane is a utility that retrieves your local weather forecast and displays it in the Status Bar (US Zip Codes only).
WebDesk is a small application which uses the Safari webkit to embed a webpage into your desktop.
What's Keeping Me
What's Keeping Me helps when you have a problem trashing a file or ejecting a disk.
a simple tool that allows the user to quickly measure the size in bytes of a given folder and all subfolders and files within it
can follow Windows Shortcuts and open the corresponding document. If the Shortcut points to another network drive, WinShortcutter will also mount the drive before accessing the link
A compact replacement for Apple's Fast User Switching menu on Mac OS X 10.3 that saves menu bar space by allowing you to show an icon, custom user picture, or short username instead of the full username, while faithfully replicating and improving the other features of Apple's menu.
Word Counter is a Macintosh OS X application that performs a word count and a character count. It can work alone or in conjunction with Apple's own TextEdit application via a small floating window. Text can be typed, pasted, or dragged into the window.
Wraparound is an application primarily intended for users with large and/or multiple screens, which allows the mouse cursor to "wrap" around the screens.
X-Assist was created to assist in the much loved but missing features of OS 9 in OSX.
(commercial) XcreenKey Chameleon is an enhanced version of XcreenKey. Added features include: color support, and an automatic transparent keyboard.
XRD provides a graphical user interface (GUI) for Apple's Xserve Remote Diagnostics. This application, in conjunction with Apple's Xserve G5 Remote Diagnostics software (xrdiags) provides an easy to use testing console.
XtraFinder add Tabs and features to Mac Finder.
zonEnergy is a little utility to keep your screen or your computer awake. Simply clicking on the menu will bring you options to disable screen dimming or computer sleeping for an amount of time, or indefinitely.
Zooom makes moving, resizing, and zooming your application windows an almost thoughtless process.