Omphalos is a "Broadcast Graphics Framework and Application"; that description is taken directly from NodeCG, which is the spiritual successor to this project. Spiritual in the sense that this is an entirely distinct code base that is meant to produce a similar application, but with varying features and in a different way.
The goal of Omphalos is to be your one stop stream control center for streaming
broadcast graphics. While you CAN control your stream with it (with an
appropriate extension bundle), and although it CAN replace a
StreamDeck, the intent is to give you full creative control over the
CONTENT that you create.
More information can be found in the documentation, including what it can do, how it does it and (perhaps most importantly) what the name means.
This is still a work in progress and initially started life as my Devember project for 2022.