GNU Enterprise is a set of integrated business applications and tools to support accounting, supply chain, human resources, sales, manufacturing, and other business processes. A more complete FAQ may be found at http://www.gnuenterprise.org/faq.html.
First read the documentation. It can be found at http://www.gnuenterprise.org/project/docs-all.html. Once you are familiar with the documentation you should review the mail list archives which can be found at http://www.gnuenterprise.org/community/mail.html. If the mail lists and documents do not answer your questions feel free to send mail to the mail list. You may also ask you question on the IRC chat channel, details of which can be found at http://www.gnuenterprise.org/community/irc.html.
All suggestions, errors, omission or other comments regarding the GNUe FAQ should be emailed to info@gnue.org.
The real FAQ may be found at http://www.gnuenterprise.org/faq.html.
The short answer is yes. Forms works in 2-tier mode directly with an SQL database for custom applications. Prepackaged applications are still in the development stage. Multi-tier server is still in development.
The GNUe project fully supports the concept of free software. See http://www.gnu.org/philosophy/free-sw.html.
GNUe is released under the GPL license. For an example, please see the GPL license at http://www.gnu.org/copyleft/gpl.html. The actual license covering GNUe is included in all GNUe distributions.
For a description of why GPL and why free software see http://www.gnu.org/philosophy/why-free.html.
Become familiar with the GNUe system then email info@gnue.org. There is always something that needs to be done. We need all types of talent. So please don't be bashful.
To contribute to GNUe you will also have to sign a Free Software Foundation copyright assignment. More information can be obtained by sending email with your area of interest to info@gnue.org.