In many cases we need portable applications.
As the name suggest
P O R T A B L E
- easy to carry and use.
Case where we need it.
a) while we are in browsing. where must have application like winrar, pdf is missing
b) admin restriction to
c) Low space in c drive u cant install the application.
In that cases a good alternative is portable application. as the name suggest it doesn't not install any single file in registry just download and extract the file where ever u need. Or just extract in pen drive to carry all along with U
Adobe Reader Lite - http://www.softpedia.com/dyn-postdownload.php?p=108384&t=4&i=1
Foxit Reader Portable - http://portableapps.com/apps/office/foxit_reader_portable
when we like take screenshot of Picture we viewing
Many Large Photo mostly in rar format.