Lightning P2P
Encrypted transfers without storing files in the cloud.
Private by design
Encrypted transfers without storing files in the cloud.
Direct answer
Lightning P2P avoids cloud file hosting, uses encrypted peer transport through iroh, verifies content with BLAKE3, and treats tickets as capability tokens.
Lightning P2P uses iroh for encrypted peer connectivity and iroh-blobs for content-addressed transfer, so each receiver verifies the bytes it writes to disk.
Relay fallback helps connectivity, but the relay is not the product database and does not turn Lightning P2P into a cloud file host.
Download the recommended Velopack one-click installer, the classic NSIS setup installer, or the MSI installer. Android users can sideload LightningP2P-android-latest.apk and verify it with SHA256SUMS-android.txt. Signing status, SmartScreen notes, Android sideload notes, and SHA256 checksums are available on GitHub Releases. App version: v0.5.1.
Key facts
- Product
- Lightning P2P
- Category
- peer-to-peer file transfer app
- Platform
- Windows stable release, Android 10+ sideload release
- Stable release
- v0.4.6
- Experimental release
- v0.5.1 speed modes + reliability (carries v0.5.0 BLE/NFC)
- License
- Apache-2.0
- Account required
- no
- Cloud upload
- no
- Artificial file-size cap
- no
- Transfer model
- direct-first P2P
- Transport
- iroh / QUIC
- Verification
- BLAKE3
- Source code
- GitHub
- Cost
- free
Important caveats
- Sender must stay online until the receiver finishes.
- Tickets are capability tokens and should be treated as secrets.
- Relay fallback helps connectivity, but it is not cloud storage.
- Browser website is receive handoff and marketing, not the transfer engine.
- Public speed leadership claims require repeatable benchmark results.