UPDATED: Clarified the end result of AppCompactor on a standard program.
When you gotta go, advanced users should strongly consider using AppCompactor to stay mobile. Just introduced by John T. Haller of PortableApps, this portable power user's right-hand man crushes program files, often shaving 50 percent off the size of a disk.
AppCompactor melds 7-Zip and UPX to compress and archive DLLs, EXEs, JARs, and other files essential for running any program into a package that doesn't need to be unarchived to run. Programs that have been compacted run smoothly from a flash drive or other on-the-go storage … Read more