What extension app can assist with integrating a partner network?

[justanewbie6828]

So I'm trying to integrate a partner network into my website where contractors/installers and service professionals can sign up for their own listing. Not only they can find more business through our referral network, it allows customers to also find a vetted professional in their area.

Here's an example of a website currently doing this: https://solarprosdirect.com/

Any Shopify extension app that can support this? Please recommend one if you know, thanks!