add Authgear to Identity Management - Single Sign-On (SSO)

README.md

@@ -377,6 +377,7 @@ Open-source code editors.
 
 - [Authelia](https://www.authelia.com/) - The Single Sign-On Multi-Factor portal for web apps. ([Source Code](https://github.com/authelia/authelia)) `Apache-2.0` `Go`
 - [Authentik](https://goauthentik.io/) - Flexible identity provider with support for different protocols. (OAuth 2.0, SAML, LDAP and Radius). ([Source Code](https://github.com/goauthentik/authentik)) `MIT` `Python`
+- [Authgear](https://www.authgear.com) - Open source solution for consumer authentication needs. Supports OIDC and SAML. ([Source Code](https://github.com/authgear/authgear-server)) `Apache-2.0` `Go`
 - [KeyCloak](https://www.keycloak.org) - Open Source Identity and Access Management. ([Source Code](https://github.com/keycloak/keycloak)) `Apache-2.0` `Java`