# 30. License

db4objects Inc. supplies the object database engine db4o under a dual licensing regime:

## 30.1. General Public License (GPL)

db4o is free to be used:
- for development,
- in-house as long as no deployment to third parties takes place,
- together with works that are placed under the GPL themselves.
You should have received a copy of the GPL in the file db4o.license.txt together with the db4o distribution.
If you have questions about when a commercial license is required, please
read our GPL Interpretation policy for further detail, available at:
http://www.db4o.com/about/company/legalpolicies/gplinterpretation.aspx

## 30.2. Commercial License

For incorporation into own commercial products and for use together with redistributed software that is not placed under the GPL, db4o is also available under a commercial license.
Visit the purchasing area on the db4o website or contact db4o sales for licensing terms and pricing.

## 30.3. Bundled 3rd Party Licenses

The db4o distribution comes with the following 3rd party libraries:
-Apache Ant(Apache Software License)
Files: lib/ant.jar, lib/ant.license.txt
Ant can be used as a make tool for class file based optimization of native
queries at compile time.
This product includes software developed by the Apache Software Foundation
(http://www.apache.org/).
-BLOAT(GNU LGPL)
Files: lib/bloat-1.0.jar, lib/bloat.license.txt
Bloat is used for bytecode analysis during native queries optimization. It
needs to be on the classpath during runtime at load time or query execution
time for just-in-time optimization. Preoptimized class files are not dependent
on BLOAT at runtime.
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generated by Doctor courtesy of db4objects Inc.