Software for vod review?

So i see streamers, specifically coaches and analyst, using some sort of software that allows them to draw on the twitch streams like over the maps and was wondering if anyone knows what its called( Ex: Sliggy on youtube used it over the grand finals at champs)

Just google some drawing overlay software

epicpen

idk what you mean but its either epicpen or valoplant

valoplant also i use trello too for my analysis

https://github.com/Rodeoclash/vodon-pro is a pretty good resource.