Monogame is more of a framework then a full-blown engine, and as such I’ve found that professional developers usually use other tools to aid in their development process. A great example of this is Celeste (made in Monogame), where the devs used or created a myriad of tools to develop the game (check out the list at https://celestegame.tumblr.com/tools).
So, my question extends to you guys. What do you use? What have you found improves your development process or speeds up your workflow?