For secure and free large file transfers, several platforms provide end-to-end encryption, password protection, and high storage limits without requiring a paid subscription. Top Free Secure File Transfer Platforms
Yes, some of these are conceptual / experimental – but the principles are real. For practical use today, substitute with: Split (MonoMAD-like) + Tor (PerTor-like) + Cryptomator (ART-like). For secure and free large file transfers, several
Some platforms are built specifically for "one-off" transfers rather than long-term storage. several platforms provide end-to-end encryption
OnionShare is the top implementation of the monomadnswtch philosophy—mono (one-time use), mad encryption, network switching (Tor), base encoding, parallel-ready, error-resilient, and atomic transfer. network switching (Tor)