分享一个 linux 的免安装绿色软件站

http://portablelinuxapps.org/

http://portableapps.com/ 

Just Download, Make Executable, and Run! These Apps have been tested on
Ubuntu 10.04 (Lucid Lynx) 32-bit, OpenSUSE 11.3 (GNOME) 32-bit , and Fedora 12 (GNOME) 32-bit.
Need help? Want to publish your own AppImage? Discuss in the Forum
Experimental GNOME desktop integration here.

there is some information for you to kown more about  app bundle

http://en.wikipedia.org/wiki/Application_Bundle

http://en.wikipedia.org/wiki/Application_Directory