Ilarion

Home: https://illarion.org/general/de_startpage.php (German)
State: mature
Download: https://illarion.org/illarion/de_java_download.php
Keyword: role playing, multiplayer online + massive
Code repository: https://github.com/Illarion-eV/Illarion-Java.git (https://github.com/Illarion-eV, @created 2011, @stars 39, @forks 26), https://github.com/Illarion-eV/Illarion-Server.git @add (@created 2011, @stars 27, @forks 21), https://github.com/Illarion-eV/Illarion-Content.git @add (@created 2014, @stars 27, @forks 41)
Code language: C++, Java, Lua
Code license: GPL-3.0
Developer: Andreas Gahr, Andreas Grob, Annabeth-Illarion, Baylamon, Chelsea Kay, Dantagon, David Bates, enviyatar, estralis, EviePryler, Fredrik Brandell, HiddenEgg, Ilya Osadchiy, Jan Mattner, JuKu, KrisE, Lisa R, Manuel, Marius, Martin, Martin Karing, meanGM, merung, Nalcaryos, Quintar, Ragorn, Robert, shivoc, slightlycomatose, Stefano Bonicatti, Tiim, vilarion, zot1

Emphasis on real roleplay.

Building