Portable Applications for Linux provide you the ability to carry your Linux programs, settings, and documents along with you, wherever you go. Your privacy is protected, as none of your settings are left behind on the computer you used them on, and, of course, Portable Apps for Linux is free software, so you can share, adapt, remix, and do whatever you wish. If you’d like to learn more about what a portable app is, you can read What is a Portable App? page.
Internet
IceWeasel Portable – a clone of the popular Mozilla Firefox™ browser
IceDove Portable – a clone of the popular Mozilla Thunderbird™ mail client
Office
OpenOffice.org Portable – a full-featured free office suite
IceOwl Portable – a clone of the popular Mozilla Sunbird™ calendar application AbiWord coming soon.
Check a complete list of available portable applications at under given location;
Linux Portable Applications List