License
OpenHierarchy is released as open source under the LGPLv3 license. 
In simplified terms this means that the framework can be used to develop proprietary solutions. However, any modifications to the framework itself and the default modules that come with it require that the changes are made available as open source under the LGPLv3 license.
Dependencies
OpenHierarchy has the following dependencies.
| Name | License | Website |
|---|---|---|
| Commons DBCP | Apache 2.0 | http://commons.apache.org/dbcp/ |
| Commons IO | Apache 2.0 | http://commons.apache.org/io/ |
| Commons FileUpload | Apache 2.0 | http://commons.apache.org/fileupload/ |
| Commons Pool | Apache 2.0 | http://commons.apache.org/pool/ |
| CKEditor | LGPL | http://www.ckeditor.com |
| EmailUtils | LGPLv3 | http://www.unlogic.se/projects/emailutils |
| FileMananger | MIT | http://labs.corefive.com/projects/filemanager/ |
| FileUploadUtils | LGPLv3 | http://www.unlogic.se/projects/fileuploadutils |
| JavaMail | BSD | http://kenai.com/projects/javamail |
| juniversalchardet | MPL 1.1 | https://code.google.com/p/juniversalchardet/ |
| jQuery | MIT | http://jquery.com |
| Log4j | Apache 2.0 | http://logging.apache.org/log4j/ |
| Log4jUtils | LGPLv3 | http://www.unlogic.se/projects/log4jutils |
| Lucene Core | Apache 2.0 | http://lucene.apache.org/core/ |
| PureCaptcha | LGPLv3 | http://www.unlogic.se/projects/purecaptcha |
| StandardUtils | LGPLv3 | http://www.unlogic.se/projects/standardutils |
| WebUtils | LGPLv3 | http://www.unlogic.se/projects/WebUtils |