You can find dozens, if not hundreds, of different applications that can be downloaded and run directly from a USB stick. You can also check sites like PortableFreeware, Portapps, or LiberKey.
That’s more than 400 different portable apps. The site allows you to download individual applications, or you can opt for a 37 gigabyte file that includes every portable application in a single location. Sites like PortableApps act as a collection of different portable apps that already have portable options. The most useful applications usually have a portable option-you just have to know where to look.