* Entirely in french, would need l10n, i18n and might not be suitable for US or international use. *Disclaimer: I cannot read french, these are assumptions.*
* The developers have been reached, not yet replied.
* [[ExistingProjects/OpenPetra]]
* The linux client is not stable as of 2013-11-25. This using the client from <http://www.pokorra.de/2013/11/install-openpetra-on-linux/>.
* The linux client is not stable as of 2013-11-25. This using the client from <http://www.pokorra.de/2013/11/install-openpetra-on-linux/>. The developers also acknowledge the fact that the linux client is not as stable as the windows client.