Empiria Player

Empiria Player released to public domain

Young Digital Planet has decided to release a key piece of technology behind YDP content products, Empiria Player, into the public domain. This enables current users of YDP content products to continue using these regardless of changes in technological environment that may take place in the future. In particular, with the source code available, Empiria Player can be freely further developed by interested parties.

Terms of release

Empiria Player is henceforth licensed under Apache 2.0 license. Full text of the license can be found here:


In any redistribution you may make that includes Empiria Player software, you should include a copy of the license. For any distributions that include Empiria Player, you should provide clear attribution to YDP.
Unless required by applicable law, Empiria Player under the Apache 2.0 license is distributed on an “as is” basis, without warranties or conditions of any kind, either express or implied. See the Apache 2.0 license text for the specific language governing permissions and limitations under the license.
Should you make developments to Empiria Player software, it will be appreciated if you publish these to public domain on similar terms, so that other members of YDP content users’ community could benefit from those developments. You are, however, under no obligation to do so.


Source code of Empiria Player can henceforth be found in the following GitHub repository:


The necessary libraries can be found in folders accessible from:


We hope that YDP digital educational content and Empiria Player will continue to be used by students around the world.


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If you have any problems or questions relating to yPublisher please contact Customer Service Centre at Speednet YPUB@speednet.pl