The 'pre-deployed environment' feature is like magic. We realise how this feature has become an innate part of our testing process. Inspired from Vercel's approach we developed something of same kind in Dashwave for android devs.
All of our research, wire-framing, flow-mapping, analysis, site-mapping is done on Whimsical. We heavily rely on Whimsical for product flows which we use in testing. Anyways, we recently started to use Figjam as well.