I’m writing this post aiming the new mac users, I think the second big obstacle for every new user is to find softwares in the new system that replaces their old softwares on his old computer.

• Videos

The first software you will need to watch almost all kind of movies is Perian
http://perian.org/

If you need to watch windows video, you can download the software below:
http://www.microsoft.com/windows/windowsmedia/player/wmcomponents.mspx

• Essentials

menumeters : With this software you can check important things of your hardware, like memory used and free, network, etc.
http://ragingmenace.com/software/menumeters/

When you need to leave your mac, for a while, it is good to lock your desktop so download:
http://www.apple.com/downloads/macosx/automator/lockdesktop.html
Best plugin for your lovely ITUNES
GimmeSommeTune -
http://www.eternalstorms.at/gimmesometune/

Sometimes we need to get a screen shot of our desktop, and you never remember the shortcut for this, so just download instantshot and you will never have to remember the damn shortcut
http://projects.digitalwaters.net/index.php?q=instantshot

Your mac has some manners . “HE” loves to dim out your monitor when you don’t move the mouse or hit the keyboard for a while, using this piece of software below you can prevent th
http://www.versiontracker.com/dyn/moreinfo/macosx/31941

If you are a brazilian and don’t want to learn how to use “acentos” you can install a keyboard map that emulates USA-International, so your keyboard will “acentuar” just like your old windows.
http://www.brockerhoff.net/usi/

If you need a torrent client and I’m sure you will VUZE is the one to go, made in java.
http://www.vuze.com/app

If you need to use a 3d model software, you can go with the free software Blender
http://www.blender.org/

Always remember that some of the most famous softwares that you can find on your old computer you will be able to find for mac, like SKYPE, REAL PLAYER, FLASH, MSN, FIREFOX, GOOGLE EARTH, ECLIPSE, NETBEANS, OPENOFFICE, PHOTOSHOP, DREAMWEAVER, ETC

If you need to manipulate any subtitle you can go with SEARS, it is made on java:
http://nico.rouviere.free.fr/Sears/?page_id=4

If you need a GTD “Get things done” software you can use Things
http://www.culturedcode.com/things/

This is illegal and you shouldn’t do it, but if you want to be an outlaw, you can use the piece of software below to download your TVSHOW, and you will not to try to find any torrent, this software will grab for you and download automatically, as soon the new episode get available :
http://tvshows.sourceforge.net/index2.html
If you need to use Apache, PHP and Mysql, in Mac is piece of cake,  you just need MAP
http://www.mamp.info/en/index.php

For sure I could write more and more, but it is enough for now. I hope you enjoy this new world that is opening to you.

Remember APPLE is taking the world.