I hear of good HUDs like Holdem Manager or Drive HUD and good software like Flopzilla.
Personally, I barely use anything - I'd like to in the future though. I used the free trial with DriveHUD and liked it but haven't tried any HUDs since. As for software, I only use the free program Equilab. It is sufficient for me now lol
1st place finish at CardsChat 30 Day Course Freeroll (May 31, 2020). As my first ever CardsChat event, this one will always be special for me.