SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

Hi, I already have a service that issues JWTs from different flows like Google, Apple, Verify Email, Email/pass. I would like to replace only the Identity verification part to start with and keep the user data etc in the existing application. Can I use Super Tokens to do this, i.e to have Super Tokens generate a JWT based on Goole, Apple, etc authentication flows (plus more) and then keep using the JWT in my front-end web and Apps?

Checkout our session recipe guide. You can use that in isolation without changing your login login.

Ok, should then look into the JWT recipe?

The session recipe is what you want to see https://supertokens.com/docs/session/introduction