The obvious one. This is what I use to stream/broadcast.

Fantastic integration between livestreaming platforms and OBS. I use this, even with my new setup in Godot Engine. It's just too powerful. Note that this may require coding knowledge, but it does have nocode tools.

A TTS integration with Streamer.bot, allows for any TTS model. Easy to setup, easy to use.

Used to create the CRT, glitch, and flicker shaders I used to have. This requires pretty extensive shader coding knowledge, but their community makes some.

Used to create the pixelated effect in my camera sources. I still use this with my Godot setup.

Used to create waveform visualizations of audio sources.