StreamerTools

Software to setup interactions and automations scripts over lot of services from Twitch and YT, to Pulsoid, MixItUp, VoiceMod and many more. Have community extensions.

interactionsscriptsautomationsoftware

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Software to create interactions and scenarios with viewers. Very good UI. Multi-PC, MIDI, OSC, and more.

Paid
Aitum Vertical

Aitum Vertical

aitum.tv

Add a second interface in vertical to your OBS. Permit to stream on mobile plateform in same time. You can link main scenes to vertical scenes.

Free