I'm in the space in that I co-founded a company called Connect The Dots (ctd.ai) that certainly has the potential to solve this problem, but we're not focused on the PRM space right now (see point above re: unwillingness to pay). Perhaps down the road.

The two commercial tools that come to mind are:

* Dex (https://getdex.com/)

* Clay (https://clay.earth/)

Although neither have really nailed it (yet). Clay is more like a Superhuman-for-Contacts, whereas Dex is really going hard at being a true PRM.

The big open source tool out there is:

* Monica (https://www.monicahq.com/)