winPenPack é uma colecção de aplicações portáteis que poderá correr directamente da sua pen drive USB.

Fica a listagem completa, retirada do site do programador:

Documents management
X-OpenOffice.org (office suite, Microsoft Office open source alternative)
X-SciTE (text editor)
X-SumatraPDF (.pdf reader)

Personal Information management
X-ANote (sticky-notes)
X-Sunbird (calendar with agenda functions)

Web management
X-FileZilla (FTP client)
X-Kompozer (Html editor for web pages creation)

Graphics
JPEGView (image viewer)
X-Gimp (image manager and elaboration)

Internet
X-Firefox (Internet browser)
X-Pidgin (instant messenger with MSN, ICQ, AIM and much more compatibility)
X-PopTray (mail monitor)
nPOP (mail monitor and e-mail client)
X-Thunderbird (e-mail client)
X-WackGet (download manager)

Multimedia
X-CdrTools FrontEnd (CD/DVD burner)
X-DékiBulle (audio player)
X-Screamer Radio (Internet radio player)
X-VideoLAN (multimedia player)
X-xVideoServiceThief (tool for downloading your favourite video clips from a lot of video websites)

p2p - File sharing
X-Halite (Bit Torrent client)
X-HttpFileServer (file server, file sharing through web)
X-Mule (p2p)

Security
X-ClamWin (antivirus)
X-KeePass (store and protect your passwords)

System
DiskCleaner (search and delete for temporary and unvailing files)
PathSync (folders synchronization)
X-7Zip (file compressor/decompressor)

Utilities
X-AstroGrep (alternative hard disk files and folders searcher)
X-Lightscreen (it allows to saving and catalog screenshots in .png, .jpg and .bmp format)

Tools
X-Cafe (it allows you to open, with a double click of mouse, the documents with the programs of pendrive USB, without any change of Windows registry)
EjectUSB (utility to close all programs running from a specified drive and attempt ejection)

Libraries
GTK+ for Windows
Java Runtime Environment (JRE)