# Introduction to Authorization
ClickVisual supports several ways to authenticate users, and the following table shows all the supported authentication providers and the features available to them.
| provider | description | available version |
|---|---|---|
| ClickVisual Auth (opens new window) | A built-in user authentication system | >= v0.2.0 |
| Auth Proxy (opens new window) | HTTP Reverse proxy authentication, which makes it easy to embed ClickVisual into your system | >= v0.2.0 |
| GitLab Oauth2 (opens new window) | GitLab OAuth2 Login | >= v0.2.0 |
| GitHub Oauth2 (opens new window) | Github OAuth2 Login | >= v0.2.0 |