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1) AppFreshSoftware updater is great for Apple applications, but appfresh has the ability to check thrid party apps for updates. A great little tool for keeping upto date.
2) AppZapper
AppZapper cleans up and uninstall all of those applications and preference files.
3) Disk Inventory XScan your disk and visually shows what files takes up how much space.
4) Grand PerspectiveVery similar to Disk Inventory X, shows you what files take up how much space on your website.
5) OpenPlistA very cool little tool if you need to end up editing Plist files.
6) QuicksilverIts a quick launch tool that enables you to open and do practically anything.
7) StuffitAn application design to unstuff or unpack nearly any file. Create if you use archives a lot.
8) TextWranglerA very cool text editor that lets you edit text files quickly. Sometimes more powerful than text edit.
9) TidyUpAn application that enables you to search through a list of files finds duplicates. Great if you have many files and you need to organise them.
10) TodosLeaves no application behind. A very visual way to view all of the applications on your computer. Kind of surpassed by the stacks in the dock.
11) UnRarXUnrarX gives you the abilty to easily uncompress .rar files.
12) XslimmerIt can really reduce the size of applications.
13) AdiumA simple all in one AIM, chat client.
14) ApGrapherA great little program that offers the ability to find information about the wireless networks whizzing around your head.
15) AzureusOne of the best bittorrent clients out there. Has lots of user extensions through the use of plugins.
16) ColloquyA really powerful application that can be used for the IRC networks. Special care has been taken in this application to make it blend in with the rest of the Mac OS theming.
17) CSSeditA must for any web developer. CSSedit offers the best tools around to help you edit and modify CSS code for you webpages.
18) CyberduckA small lightweight application for ftp. Has some small niggles, but it is free. Transmit is better if you use ftp a lot.
19) FirefoxOne of the best web browsers around in my opinion. A viable alternative to safari.
20) iStumberA great small application that enabled you to view wireless and bluetooth networks quick and hassle free.
21) LittleSnitchThe application that snitches on any application that is trying to access the net to phone home. Great for protecting you privacy.
22) NetnewswireA very popular RSS client for the mac, nuff said.
23) SkypeOffering superior calls over the internet, it is the application if you do a lot of talking and want a good quality transmission.
24) TransmissionA light weight bittorrent application that is gaining popularity. Its personal choice at this point of transmission verse Azureus.
25) TransmitA great application from Panic that will feature a couple of time in this list. It is a powerful application for ftp uploads and downloads.
26) UndercoverA piece of software that dials to the undercover servers if you computer has been stolen. Great if you use a laptop, less useful on a desktop.
27) UnisonAnother piece of panic software that enables you to use the usenet newsreader networks. A really good piece of software if you use usenet a lot.
28) VidaliaA GUI controller for the Tor anonymity network. One click on, one click off, simple and easy to use. Best of all its free.
29) VLCThe all in one application for watching videos. Supports nearly every codec imaginable.
30) ApertureOne of Apples Pro programs for organizing and altering photos. A very powerfull application although comes with a bit of a price tag.
31) AudacityA free audio editor which has a few advance features that make it create for editing audio for your videos or other applications.
32) BlenderA free 3D modeler which has the same power of many of the most advance applications on the market. Comes with quite a steep learning curve.
33) Delicious LibraryA very cool application used to organise your books, movies, games and CD’s. You can use your built in iSight to save time by scanning your books. Very cool and fun to use.
34) DeskLickrA simple application that uses the vast photo resource of flickr to change your wallpaper every so often. Makes a cool change.
35) DesktasticAnoter Panic app. This time it can be used to write directly on your desktop. Very cool if you use a tablet for your daily work.
36) GimpThe free image editing program. Used by many open source and linux users.
37) Google EarthUse it to zoom in on planet earth and explore the world around you.
38) HandBreakAn open source application that can quickly convert DVD’s to Mpeg-4.
39) iLifeThe all in one package made by Apple. I don’t think this needs any explaining.
40) iShowUThis application takes a direct recording of your screen. Great if you want to make recordings of specific applications. You need a good CPU, a bit of a power hog.
41) JoostA very hot application that lets you watch free TV. Beautiful application even though the amount of TV stations are a bit small.
42) PhotoshopThe high priced application for real pros who want to edit and manipulate images and photos.
43) PixelmatorThe medium priced application that has a lot of great image editing potential. Not as expenisive as Photoshop.
44) ShapeshifterBored of your interface? Let shape shifter change it for you. Not Leopard compatitble although this is likely to change.
45) Theme ParkA great little app which lets you delve into the resource files for applications and lets you change them. Not as powerful as Shapeshifter but lets you tweak little bits of your operating systems interface.
46) TVShowsA little app that downloads all of the torrent files for your favourite TV shows. You need a bittorrent client to finish the process off.
47) WallsaverPuts your screensaver as your wallpaper. Add a bit of life to your desktop.
48) AutorateA simple piece of software that rates your musis in your iTunes libary based on the number of plays and track skips.
49) FishA simple little program that shows you little fishes swimming around.
50) iAlertUA little program that can arm your computer. Moving your laptop will set of the alarm and alert you to intruders.
51) LiquidmacOnce again using the motion sensor in a laptop. This program fills the screen with water which you can play around with by moving your computer.
52) MacSaberLet your Mac become a jedi. Once again using the motion sensor makes cool lightsaber noises.
53) QuinnTetris on the extreme side of life. A cool little app with amazing graphics on the old arcade favourite Tetris.
54) Resize ‘Em AllA little program which can be used to resize images.
55) RulersPut a ruler on your screen. This application lets you measure nearly anything on your screen, great if you are in the design world.
56) smcFanControlA small application that runs in your menu bar to control your fan speeds.
57) TimeOutOne for the work-a-holic. A little application that tells you to take a break and stop what you are doing.
58) WallsaverSets your screen saver as your wallpaper. A great little program to add a bit of movement to your desktop.
59) Apple Remote DesktopOne of Apples many programs that lets you work effectively on your network. This app lets you look in on a remote desktop and work with it remotely.
60) Battery HealthOne of many tools used to help you find out how much juice is left in your Mac battery. A tool for any laptop.
61) BootCampInstalling Windows on a Mac is never easier with BootCamp. A simple program that create a partition on you disk for installing windows.
62) BwanaDikA menu bar monitoring tool for you network. Lets you find tons of info about you LAN and WAN.
63) Carbon Copy ClonerFor serious back ups you need somthing like Carbon Copy Cloner that can clone your entire drive quickly and easily.
64) ChmoxChmox is a program that enables you to open .chm help files on your Mac. Chm files are not supported in preview.
65) Coconut BatteryA personal favourite of mine, this is another battery tool to monitor the health of your battery. I wish my laptop was run off coconuts.
66) DasBootDasBoot is a tool to create a diagnostic and repair kit for your computer to put on an iPod or flash drive.
67) Flip4MacThe tool endorsed by Microsoft to help with those pesky .wmv files.
68) FreeDMGThis software creates drag and drop .dmg archives on the fly. Easy to use if you make a lot of disk images.
69) GeekToolGeekTool is a preference pane module to show system logs, unix commands output, or images (i.e. from the internet) on your desktop.
70) GrowlA very useful tool that is used by many applications to show a clean way of displaying messages to you. Like the bubbles in Windows except a hell of a lot better.
71) Hardware MonitorHardware Monitor is designed to check the various pieces of hardware on you computer for faults and problems as well as give messages back to you.
72) Hex FiendEditing hex files cannot be easier with Hex Fiend.
73) HoudahGeoHoudahGeo allows you to add Geo data to any image within the EXIF data. Helps you find your way around the world in your images.
74) iStat MenusiStat Menus off a wide range of statistical analysis of your computer including various hardware bits. Their widget is one of my favouites.
75) Mac PilotThis piece of software allows you to modify various parts of your computer that you would normally have to do through Terminal.
76) MacJanitorThis little app cleans up various system files and other bits and bobs to keep your computer running smoothly.
77) MainMenuMainMenu is another piece of software to help you keep your computer running smoothly.
78) MenuMetersAnother monitor piece of software but this one is designed to run within the menu bar.
79) MonolingualWho needs to know French. Monolingual removes the languages from the computer that you do not need.
80) OperationA project management tool that lets you organise your projects quickly and easily.
81) ParallelsHighly recommended virtualization software for virtualizing other OS’s.
82) Service ScrubberHelps you organise and remove services from your menus (Name of App > Services)
83) SquidDanOnce a very popular proxy tool for sorting out your own proxy.
84) StompStomp those big files down to size. Helps reduce video files into more compressed formats.
85) SuperDuperAnother great backing up utility although its not fully Leopard compatible at the time of writing.
86) Synergy2A very cool little application that lets you share a mouse and keyboard between one or more computers.
87) TinkerToolA tool that lets you access more preferences the Apple has built into the OS.
88) VMWareAnother very good piece virtualization software to enable to to virtualize other OS’s.
89) Cha-ChingA simple money program that helps you organise your accounts, budgets and finances.
90) Concept DrawMore of a group of programs that offer a wide range of applications such as flow charts to mind maps.
91) FilemakerA cross platform database application, that has amazing power and potential.
92) iWorkApples work application package to complement iLife, a good package if you want the Apple integration although lacks on some features.
93) Microsoft OfficeOffice is one of the most prominent packages on the Windows machines for work programs. Very good on Mac, although some small annoying bugs.
94) Money2Another application for managing your accounts. The interface on this program is amazing.
95) NeoofficeAn Open Office port to Mac, like Microsoft Office, except its free.
96) NvuA very powerful webpage editor for designing and creating websites. Just as good as Dreamweaver.
97) OmnigraffleA brill program that offers a really cool way of creating presentation diagrams. Check out the Omni Groups offerings for all of the cool programs they have to offer.
98) ProcessAnother program by Jumsoft on this list that lets you plan and organise your projects.
99) Quicken Another personal finance program, but this one feels more corporate and official.
A cool little program that helps you organise all your bits of information, great if you end up filling up dashboard with millions of stickies.