Private voice & text messenger disguised as a video streaming platform. Your conversations look like someone watching a live stream.
Voice and text travel as HLS video segments (.m3u8 playlists + .ts files). Deep packet inspection sees a video stream, not a messenger.
XChaCha20-Poly1305 with X25519 key exchange and Ed25519 signatures. The server never sees your data — it only relays encrypted blobs.
No registration, no phone number, no email. Enter a shared key — you're in. Nothing is stored after the session ends.
Epoch-based key ratchet ensures that compromising one message key doesn't reveal past or future messages.
Web client for any browser, native CLI for Linux, macOS, and Windows with Opus codec for crystal-clear voice at 24kbps.
Fixed-size segments with random padding. Every packet looks identical regardless of content — voice, text, or silence.
| StreamLine | Signal | Telegram | |
|---|---|---|---|
| E2E Encryption | Always | Always | Opt-in |
| Traffic Masking | Yes | No | No |
| No Registration | Key only | Phone # | Phone # |
| No Metadata | Zero | Some | Stored |
| Fixed Packet Size | Yes | Variable | Variable |
| Self-Hostable | Full | Partial | No |