While not strictly "portable" in the old sense, these modern clients include improved matchmaking and tournament structures that involve competitive drafting for maps and opponents. Battle.net Portable Version Basics Definition:
Portable versions of the game often come bundled with the latest map versions (like DotA 6.8x) that include dedicated draft modes for competitive play. Draft Feature in Game Launchers (Portable Clients): warcraft 3 frozen throne portable
Let’s be unequivocal: Warcraft III: The Frozen Throne is proprietary software owned by Microsoft (via Activision Blizzard). Distributing a pre-patched portable version of the game on torrent sites is software piracy. While not strictly "portable" in the old sense,
This report details the technical nature of these "portable" editions, the legal and security implications of their use, and the current state of the game regarding modern hardware. warcraft 3 frozen throne portable