OpenOffice.org Portable

 OpenOffice.org Portable is a full-featured office suite that's compatible with Microsoft Office, Word Perfect, Lotus and other office applications. It's easy-to-use and feature-rich, performing
nearly all of the functions you'd expect in an office suite, but at no cost.

File size: 65.1MB (download), 171MB (installed)
System Requirements: Windows 95*/98/Me/2000/XP/Vista, WINE under Linux/UNIX

* Windows 95 support requires a patch

Download here

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PStart 2.09 Portable

PStart is a simple tray tool to start user defined applications. Designed to run portable applications (like Portable Firefox & Thunderbird), you can start anything runnable from USB key devices or removable disks.

Download here (0,6 MB)

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ClamWin Portable

- ClamWin is a Free Antivirus for Microsoft Windows 98/Me/2000/XP/2003. It provides a graphical user interface to the Clam AntiVirus engine. It features:
- High detection rates for viruses and spyware
- Regular virus database updates. ClamAV team regularly updates virus databases to include a new virus/variant immediately after it appears
- Standalone Virus Scanner

Please note that ClamWin Free Antivirus does not include an on-access real-time scanner, that is, you need to manually scan a file in order to detect a virus or spyware. Also, ClamWin Portable has scheduled scans and updates disabled as they are not used in a portable scenario.

File size: 5.8MB (download), ~13Mb (installed with definitions)

Download here

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7-Zip Portable

7-Zip Portable is the popular 7-Zip packaged as a portable app, so you can take your file archiver with you and work with your compressed 7z, ZIP, GZIP, BZIP2, TAR, RAR files and more on the go. You can place it on your USB flash drive, iPod, portable hard drive or a CD and use it on any computer, without leaving any personal information behind. 

7-Zip 4.42
Size: 1.1 MB

Download here

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Firefox Portable 2.0 Download

Mozilla Firefox is a fast, full-featured web browser that's easy to use. It has lots of great features including popup-blocking, tabbed-browsing, integrated search, improved privacy features, automatic updating and more. Plus, thanks to the PortableApps.com launcher bundled in Mozilla Firefox - Portable Edition, it leaves no personal information behind on the machine you run it on, so you can take your favorite browser along with all your favorite bookmarks and extensions with you wherever you go.

File size: 5.1MB (download), ~25Mb (installed)

Download Firefox Portable 2.0 here

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Free Download Portable Software

PortableApps Suite




PortableApps Suite™ is a collection of portable apps including a web browser, email client, office suite, calendar/scheduler, instant messaging client, antivirus, sudoku game, backup utility and integrated menu, all preconfigured to work portably. Just drop it on your portable device and you're ready to go.
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Download PortableApps_Suite_Standard_1.0 here

Standard: 89.5MB (download), ~260MB (installed)
Include:  ClamWin Portable (antivirus), Mozilla Firefox - Portable Edition (web browser), Gaim Portable (instant messaging), OpenOffice.org Portable (office suite), Sudoku Portable (puzzle game), Mozilla Sunbird - Portable Edition (calendar/task manager) and Mozilla Thunderbird - Portable Edition (email client) and runs comfortably from a 512MB drive.

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Download PortableApps_Lite here

Lite: 30.4MB (download), ~105MB (installed)

Publisher: PortableApps.com (John T. Haller), Mozilla, OpenOffice.org, AbiSource, ClamWin team, Gaim team