cas

<p align="center">
  <img src="https://github.com/user-attachments/assets/ce80e360-4df8-4a4b-897e-6ab547e8f906" alt="Apereo CAS" />
</p>

<h1 align="center">Apereo CAS</h1>

<p align="center">
  <strong>Open-source single sign-on and identity provider for the web.</strong><br/>
  One login for all your applications, over CAS, SAML2, OAuth2 and OpenID Connect, with multifactor authentication built in.
</p>

<p align="center">
  <a href="https://github.com/apereo/cas/releases"><img src="https://img.shields.io/github/release/apereo/cas.svg?style=flat-square&logo=github&label=release" alt="Latest release" /></a>
  <a href="https://central.sonatype.com/namespace/org.apereo.cas"><img src="https://img.shields.io/maven-central/v/org.apereo.cas/cas-server-webapp?style=flat-square&logo=apachemaven&label=maven%20central" alt="Maven Central" /></a>
  <a href="LICENSE"><img src="https://img.shields.io/github/license/apereo/cas?style=flat-square" alt="Apache 2.0 license" /></a>
  <a href="https://apereo.slack.com/"><img src="https://img.shields.io/badge/slack-join%20chat-4A154B?style=flat-square&logo=slack" alt="Slack" /></a>
  <a href="https://codecov.io/gh/apereo/cas"><img src="https://img.shields.io/codecov/c/github/apereo/cas/master?style=flat-square&logo=codecov" alt="Code coverage" /></a>
  <a href="https://community.develocity.cloud/scans?search.rootProjectNames=cas-server"><img src="https://img.shields.io/badge/revved%20up%20by-Develocity-06A0CE?style=flat-square&logo=gradle" alt="Revved up by Develocity" /></a>
</p>

<p align="center">
  <a href="https://apereo.github.io/cas/development/planning/Quick-Start.html"><strong>Quick Start</strong></a> ·
  <a href="https://apereo.github.io/cas/">Documentation</a> ·
  <a href="https://github.com/apereo/cas/releases">Releases</a> ·
  <a href="https://apereo.github.io/cas/Support.html">Support</a> ·
  <a href="https://apereo.github.io/cas/developer/Contributor-Guidelines.html">Contribute</a>
</p>

---

CAS is an enterprise, multilingual identity provider and single sign-on server. It started as the
[CAS protocol](https://apereo.github.io/cas/development/protocol/CAS-Protocol.html), an open and well-documented
authentication protocol, and this repository holds its primary implementation: a Java server built on
[Spring Boot](https://spring.io/projects/spring-boot) and [Spring Cloud](https://spring.io/projects/spring-cloud),
with support for a plethora of authentication protocols and features. CAS is free and open source, managed by
the [Apereo Foundation](https://www.apereo.org/programs/software/cas) and licensed under [Apache 2.0](LICENSE).

## Try It in a Minute

With Docker installed, start the official image, using a CAS version
[tagged on Docker Hub](https://hub.docker.com/r/apereo/cas/tags) in place of `<version>`:

```bash
docker run --rm -p 8080:8080 \
  -e SERVER_SSL_ENABLED=false -e SERVER_PORT=8080 \
  apereo/cas:<version>
```

Open http://localhost:8080/cas/login and log in as `casuser` with the passw