StreamerTools

AskLive is an interface for live Q&A sessions that automatically gathers and displays questions

q&aaskovervlayquestions

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Twitch API relay to localhost chat, alerts, and lot of more widgets. Good documentation and a community module forum.

Free
Larix Broadcaster

Larix Broadcaster

softvelum.com

Android/iOS freemium app to record/stream with smartphone. Support H265, SRT, NDI, double-cam on iOS, WebRTC, talkback and more.

Free + Paid