Drfone Portable ((free)) «ORIGINAL ⚡»

While not "portable," the online installer is only 5MB. You can keep this installer on your USB drive. When you plug into a new PC, run the installer (which takes 45 seconds) and log in. This is safer than cracked portable versions.

Wondershare Dr.Fone acts as a "Swiss Army knife" for smartphones, offering a range of modules: drfone portable