I'm using the Unity5x engine, I favor MonoDevelop when coding, although I use Visual Studio when I need to create extra devtools and I haven't managed to get Stetic UI designer to work for MD :(
For asset creation I use Blender and GIMP.
I previously used Azure Team Services for project management, but I recently began creating my own management tool for the fun of it, and also to remove alot of the stuff that I never had any use of in Azure. Difficult to not see it as my favorite management tool considering I'm able to tailor it completely after my own needs...
I'm using another tool I created for fun (GIFSnapper) to capture and generate GIF animations on screen for content to dev. logs, and to record videos I really like OBS Studio