Does the GPL require me to release my extensions, modifications, or applications that use or run on the Pentaho BI Platform within my organization?
In general, the GPL requirement for release of the extensions, modification and applications that use or run on code licensed under the GPL are triggered upon distribution of compiled software or source code. The complete terms of the GPLv2 license are available from the Open Source Initiative here. GNU.org also provides an FAQ as well as translated versions of the license here. The definitions for modifications, extensions, derivative works and distribution can be complicated and should be reviewed by legal counsel.