Observed arrival · 2026-10-29

ratcast: peer-to-peer watch parties

ratcast.app Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

An open-source desktop app for sharing a screen and its sound with friends while talking by voice or camera.

Landing page captured for the 2026-10-29 issue.

For: Friends hosting remote movie or game nights
Worth noticing: The page says rooms use rats:// links and peers find one another through a DHT, with a relay as fallback.

Field notes

Room links use a rats:// scheme; the site says peers discover one another through a DHT, then try port mapping and hole punching before relaying when direct connections fail. It describes screen capture with application audio, voice processing through WebRTC AudioProcessing, and frame encryption via Noise and SFrame. Windows and Linux downloads are offered, while macOS and Android are listed as planned.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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