Meet Cam is a virtual camera for macOS. It overlays useful (like Meeting Timers, Headline - a news-like ticker) and fun (custom decorations, soon emojis and gifs).
This is a really cool product. I was imagining that some day in the future, people won't present slides on a separate screen but rather integrate it into their video. Like the ability to overlay graphics and points over the person's video feed would be an interesting way to approach presentations versus boring, non-engaging slides.
Gleek
Meet Cam
Convo
Meet Cam