Portable Apps Suite 1.0 includes Web Browser, Email Client, Office Suite, Calendar/ Scheduler, Instant Messaging Client, Anti-Virus, Sudoku Game and Backup Utility. You can use this program in any application of Microsoft Windows.
If you are using 1GB or more flash drive, you can use Portable Apps Suite Standard Edition. This version has ClamWin Portable (antivirus), Mozilla Firefox (web browser), Gaim (instant message), Open Office (office suite), Sudoku (puzzle game), Mozilla Sunbird (calendar/task manager) and Mozilla Thunderbird (email client). Portable Apps Suite Standard edition is only about 100MB. You can download it free at prdownloads.net.
If your USB flash drive is from 512MB to 1GB, I recommend you to use Portable Apps Suite Lite Edition. In this version, you also have all the applications like the Standard Version. However, Open Office will be replaced by Abi Word Portable (word processor). You can download Lite Edition free at PortableApps. It is only about 40MB.
If you possess a flash drive that has very small memory, you can choose a few necessary applications you want to download at portableapps.com. Other way, you can choose to install Portable Apps Suite Base Edition. This edition is as little as 1MB. You can download Base Edition free at prdownloads.sourceforge.net. Base Edition only has basic applications (Portable Apps Menu, Portable Apps Backup Utility). I recommend you to install a few more applications if you use this edition.
I am a student. At my school, they do not have the applications that I need like Instant Messenger, Email Client. Therefore, I have to install this patch. I figured out that Portable Apps Suite is very useful. Every edition of it is free. I hope that you are also satisfied with this program.