Persona

Persona is a configurable identity platform. You build verification flows from blocks (government ID, selfie, database checks, phone and email, documents like proof of address, sanctions screening) and set rules for when each step runs, so a low risk user gets a light flow and a suspicious one gets more. Results, cases and reports live in one dashboard, and Graph links accounts that share identity signals.

It's developer friendly with a real free trial and a published starter plan, and it scales into fully custom enterprise deals. It's popular with marketplaces and platforms that need "verify this person" for trust reasons, not only regulatory KYC.