Directly open all your applications from your USB..
There is almost a portable version to all latest applications.
Check this awesome site.
Portableapps
It offers a wide range of softwares..
That can directly run from your USB now carry your stuff with yourself..

See the list they Offer

Applications

Accessibility

Firefox Accessibility Extension - Make Firefox more accessible
On-Screen Keyboard Portable - Easily access an on-screen keyboard
Virtual Magnifying Glass Portable - A full-featured screen magnifier

Development

Notepad++ Portable - A full-featured text editor with syntax highlighting
Nvu Portable & KompoZer Portable - The easy-to-use Nvu web editor
XAMPP - Apache, mySQL, PHP, phpMyAdmin, etc in one package

Education

Stellarium Portable - portable planetarium

Games

DOSBox Portable - classic DOS games to go
Jooleem Portable - simple and addictive puzzle game with great music and visuals
LBreakout2 Portable - breakout-style arcade game similar to Arkanoid
Mines-Perfect Portable - a classic hunt-for-mines game with advanced features
PokerTH Portable - classic Texas Hold Em style poker at its best
Sudoku Portable - the wildly popular and addictive puzzle game

Graphics & Pictures

GIMP Portable - Photo and Image Editor

Internet

FileZilla Portable - the full-featured FTP client
FireFTP Extension (for Firefox) - a lightweight extension
Miranda IM Portable - chat with AOL, MSN and Yahoo users in a customizable interface
Mozilla Firefox, Portable Edition - the award-winning web browser that's safe and secure
Mozilla Thunderbird, Portable Edition - the handy email client
Nvu Portable & KompoZer Portable - the easy-to-use webpage editor
Pidgin Portable - chat with AOL, MSN and Yahoo users in an easy-to-use interface
PuTTY Portable - lightweight telnet and SSH client
Sage Extension (for Firefox) - A full-featured RSS extension
WinSCP Portable - SFTP, FTP and SCP client

Music & Video

Audacity Portable - A simple audio editor and recorder
BonkEnc Portable - extract, convert, and encode audio
CoolPlayer+ Portable - Lightweight, fast, easy-to-use audio player
MPlayer Portable - Full-featured movie player with support for most video formats
VirtualDub Portable - video processing and capture utility
VLC Media Player Portable - An easy to use media player that plays most audio and video formats

Office

AbiWord Portable - a lightweight word processor compatible with Microsoft Word files
GnuCash Portable - accounting, expenses and financial management
Lightning Extension (for Thunderbird) - A lightweight extension for your calendar and tasks
Mozilla Sunbird, Portable Edition - Calendar and task management with a familiar interface
Mozilla Thunderbird, Portable Edition (Address Book) - Email client's built-in address book with import/export functions
OpenOffice.org Portable - word processor, spreadsheet, presentations with Microsoft compatibility
PDFTK Builder Portable - split, collate, watermark and password protect PDF documents
PNotes Portable - stick notes to go
SpeedCrunch Portable - an intuitive algebraic calculator
Sumatra PDF Portable - a lightweight PDF viewer
Task Coach Portable - to do list and task manager