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

SuperTokens.com

in terms on some of the repos im interested in are:
https://github.com/supertokens/supertokens-golang
https://github.com/supertokens/supertokens-nestjs
https://github.com/supertokens/supertokens-auth-react
https://github.com/supertokens/create-supertokens-app

if any of these need any contributors please let me know. Thanks!