I wonder what the state of workflow engines is these days. Back in the (distant, distant) past, everything seemed to use Lotus Notes. Today, there are oodles of workflow engines of all shapes and sizes, but asides from domain-specific stuff like Salesforce, I hardly hear anyone mention them.
I helped a legacy Lotus Notes application reincarnate once, and it was impressive how reasonably solid it's ability was to be offline-first, and mobile first, and how fewer sychronization/replication errors there were than I expected.
Lotus Notes was doing decentralized apps built with NoSQL databases before either of those things were cool. Mostly because "going online" was potentially quite an undertaking at the time.
