> ## Documentation Index
> Fetch the complete documentation index at: https://doc.lucidworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Open Source Libraries

export const LwTemplate = ({title = "Key questions to get you started", icon = "sparkles", cta = "Powered by Agent Studio", linkHref = "https://lucidworks.com/demo/?utm_source=docs&utm_medium=referral&utm_campaign=docs_cta_ai"}) => {
  const [isLoaded, setIsLoaded] = useState(false);
  useEffect(() => {
    const timer = setTimeout(() => {
      setIsLoaded(true);
    }, 500);
    return () => clearTimeout(timer);
  }, []);
  return <div className="lw-template-container">
      <Card title={title} icon={icon}>
        {isLoaded && <span dangerouslySetInnerHTML={{
    __html: `<lw-template id="a029c1a9-28be-427e-b0e1-5d918920246a"></lw-template
            >`
  }} />}
        <Link href={linkHref} className="agent-studio-link text-left text-gray-600 gap-2 dark:text-gray-400 text-sm font-medium flex flex-row items-center hover:text-primary dark:hover:text-primary-light group-hover:text-primary group-hover:dark:text-primary-light">Powered by Lucidworks Agent Studio</Link>
      </Card>
    </div>;
};

[old doc.lw link]: https//doc.lucidworks.com/app-studio/4.2/3136

[localhost link]: http://localhost:3000/docs/5/app-studio/reference/installation/open-source-libraries

[mintlify link]: https://doc.lucidworks.com/docs/5/app-studio/reference/installation/open-source-libraries

Below is a list of Open Source Libraries that Appkit uses, along with license details.

<LwTemplate />

| Open Source Library         | License Details                                                                      |
| --------------------------- | ------------------------------------------------------------------------------------ |
| SLF4J                       | Logging abstraction framework. MIT License.                                          |
| Log4j (optional)            | Logging framework. Apache 2.0 License.                                               |
| Commons-IO                  | Utilities. Apache 2.0 License.                                                       |
| Apache Lucene (optional)    | Highlighting. Apache 2.0 License.                                                    |
| WRO4j (optional)            | CSS and JavaScript compiler. Apache 2.0 License.                                     |
| URLRewriteFilter (optional) | URL routing. BSD License.                                                            |
| CORS Filter                 | Cross-origin scripting capabilities. Apache 2.0 License.                             |
| Sitebricks (optional)       | Used to provide configuration to Sitebricks. Apache 2.0 License.                     |
| Hibernate                   | Persistence layer integration. Apache 2.0 License.                                   |
| Spring Security (optional)  | Authentication and authorization provider abstraction. Apache 2.0 License.           |
| JodaTime                    | Date calculations. Apache 2.0 License.                                               |
| Jasypt                      | Encryption/decryption. Apache 2.0 License.                                           |
| Google Guice                | Dependency injection. Apache 2.0 License.                                            |
| Jersey (optional)           | Web services. CDDL 1.1 and GPL 2 with class path exception licenses.                 |
| OWASP ESAPI                 | Security and vulnerability layer. BSD License.                                       |
| Bouncy Castle License       | Cryptography. MIT License.                                                           |
| Apache Derby (optional)     | Database. Apache 2.0 License.                                                        |
| Markdownj (optional)        | Markdown parsing. Custom license, allows redistribution and use through attribution. |
| Rome (optional)             | RSS parser and generator. Apache 2.0 License.                                        |
| Jackson                     | JSON parsing and generation. Apache 2.0 and LGPL licenses.                           |
| Quartz Scheduler (optional) | Event scheduling for saved searches and alerting. Apache 2.0 License.                |
| Plexus                      | Application building. Apache 2.0 License.                                            |
| JUnit                       | Unit testing - not included in deliverable. IBM Common Public License 0.5.           |
| Atunit                      | Unit testing - not included in deliverable. Apache 2.0 License.                      |
| EasyMock                    | Unit testing - not included in deliverable. Apache 2.0 License.                      |
| ImageIO-Ext (optional)      | Rich media transcoding. LGBP 2.1 and BSD licenses.                                   |