Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Computer Science Education | Computer Science and Society




LASAD is a web-based argumentation system that allows users to argue in a structured fashion using graphical representations. Arguments can be constructed individually or collaboratively, the software provides group support features such as chats or awareness cues. Unlike many other systems, the LASAD software supports argumentation in multiple domains that have their typical argumentation structures. To enable this, argumentation languages (such as Toulmin diagrams or data-hypothesis structures) can be configured in the software using an authoring environment. LASAD also supports automated analyses of arguments via a customizable rule engine.

Software Resources

The following resources are licensed under the GPL.

Source Code:



  • Frank Loll
  • Sabine Niebuhr



This software was used or developed within these research projects