OpenJAUS is the leading source for JAUS-compliant middleware for unmanned systems. Founded in 2006, OpenJAUS can trace it roots to the 2005 DARPA Grand Challenge as graduate students Bob Touchton, Danny Kent and Tom Galluzzo were tasked with developing a JAUS compliant architecture for use with the DARPA Grand Challenge entry from the University of Florida.In 2006, the OpenJAUS codebase was publicly released for the first time under a BSD License. Based on the software developed at the University of Florida, OpenJAUS 1.0 saw adoption by a number of companies looking to fulfill JAUS requirements. In the summer of 2008 OpenJAUS held its first Developer's Conference in conjunction with the release of OpenJAUS 3.3. This was based on the then current JAUS Reference Architecture version 3.3 and included a number of suggestions from OpenJAUS users such as a C++ version of the Node Manager, better service connection support, and a more concise and robust component template.In 2010, OpenJAUS LLC was formed by Danny Kent and Tom Galluzzo as the corporate entity to maintain, improve and advance the OpenJAUS platform. The JAUS standard had undergone a number of significant changes and the need for a new SDK based on this new flavor of JAUS (often referred to as SAE JAUS) was clear. OpenJAUS LLC took ownership of that challenge and began development of OpenJAUS 4.0 as a completely new and robust solution to the challenges and opportunities presented by SAE JAUS. OpenJAUS 4.0 is completely re-written from the ground up based on Model Driven Development (MDD). OpenJAUS 4.0 was released publicly in early summer 2011.