Butt
Butt "BUTT (Broadcast Using This Tool) is an easy to use, multi OS streaming tool. It supports Icecast, Shoutcast and WebRTC and runs on Windows, macOS and Linux. The main purpose of BUTT is to stream live audio from your computers microphone or line input to an Icecast, Shoutcast or WebRTC (WHIP) server. If you want you can also record your broadcast locally on your computer. With BUTT you can not directly stream audio files. "