Line-rate throughput
QUIC with BBR congestion control, plus a parallel-TCP “HTTPS” fallback for locked-down networks. It fills the pipe instead of crawling like a single TCP stream.
Blixt — large file transfer at lightning speed
Move big files at full speed— securely, peer‑to‑peer.
blixt is an all-Rust, Aspera-style transfer tool. QUIC + BBR, BLAKE3 integrity, TLS 1.3 with an out-of-band code, NAT traversal, and link aggregation across every NIC you have.
Free account · Windows, Linux & macOS · desktop app, CLI & web
Multi-NIC aggregation
Bond Wi-Fi + Ethernet + tethered mobile into one transfer. Real bandwidth aggregation across separate ISPs — validated at ~1.5–1.7× on two uplinks.
End-to-end secure
TLS 1.3 with fail-closed certificate-fingerprint pinning and an out-of-band 6-digit code (SAS) you compare with your peer. The relay can never read your data.
BLAKE3 integrity
Every byte is verified with a BLAKE3 root hash. Interrupted transfers resume from a MAC-protected journal — only the missing chunks are re-sent.
Any network
ICE/STUN hole-punching with a metered relay and self-hosted TURN fall-back, so peers behind NAT still connect — directly whenever possible.
Cloud storage
A built-in S3 tab (Amazon S3, MinIO, Wasabi, DO Spaces, and more) with parallel + multi-NIC uploads, resumable multipart, and folder sync.
Three steps
- Sign in once — in the desktop app, the CLI, or the web UI. Your session is your key to the network.
- Share a code. The sender offers files; the receiver picks what to pull. Compare the 6-digit code out of band.
- Transfer.Direct peer-to-peer when possible, relayed when it isn’t — always encrypted, always verified.