I like to use Torch Browser which is basically Chrome with some built-in functionality to download multimedia - straight out of the box, no plug-ins required.
Unfortunately, extensive googling has found a lot of junk sites which claim to have a portable version, but don't. The absence of such a thing on both the Torch site and http://portableapps.com/ convinces me that it doesn’t exist.
Can anyone suggest an alternative?
[Update] Thanks for the suggestion, @Alejandro, but I would rather not have to launch a VM specifically for this porpoise.
- run on Windows - be gratis
- be portable
- can download multi-media without the need for extra plug-ins or configuration