We have a minimal functional product, which means that OpenPetra is not finished, and probably never will be, but it is usuable today. The idea is to release early and often, to get feedback from you, the real users!
You can also install OpenPetra locally or on your own server, have a look at this script: https://get.openpetra.org
The manuals can be found here.
Below are the links to the most recent OpenPetra releases with some notes about each release.