Download liberkey, it is a freeware distribution that runs entirely off a USB stick (you just save the distro to the USB stick and you're done, they all run as if already installed, ie unpacked). All the software is freeware, not shareware crap that keeps bothering you, and the Liberkey software handles all the update management for each application. Currently the ultimate Liberkey distribution has 293 apps which include free Office software (Openoffice, LibreOffice), music players, codecs, rippers, management, same for video, benchmark software, computer/network diagnostic software, the lot basically. And even the ultimate distro fits on a 2 GB stick so it doesn't need heaps of space.
The site is http://www.liberkey.com/en/catalog/browse.html. Probably sound like a shill but its a really good collection of software, and the benefit of the USB model is that you don't have to clog up your HDD with a bunch of apps you only use rarely.







