QP/C++ (Quantum Platform in C++) is a lightweight, open source software framework for building responsive and modular real-time embedded applications as systems of cooperating, event-driven active objects (actors). The QP/C++ framework is a member of a larger family consisting of QP/C, QP/C++, and QP-nano frameworks, which are all strictly quality controlled, thoroughly documented, and commercially licensable.

All QP frameworks can run on bare-metal single-chip microcontrollers, completely replacing a traditional Real-Time Operating System (RTOS). Ports and ready-to-use examples are provided for major CPU families.

QP/C++ can also work with many traditional RTOSes and desktop OSes (such as Windows, Linux including embedded Linux).

The behavior of active objects is specified in QP by means of hierarchical state machines (UML statecharts). The frameworks support manual coding of UML state machines in C or C++ as well as fully automatic code generation by means of the free graphical QM modeling tool.

The QP frameworks are used in millions of products worldwide in aerospace, medical devices, consumer electronics, wired and wireless telecommunications, industrial automation, transportation, robotics, and many more. The QP frameworks and the QM modeling tool receive over 40,000 downloads a year.

The book, Practical UML Statecharts in C/C++, 2nd Edition provides a detailed design study of the QP frameworks and explains all the related concepts.

NOTE: For more information about QP/C++, please visit: http://www.state-machine.com/qpcpp

QP/C++ is licensed under the increasingly popular dual licensing model, in which both the open source software distribution mechanism and traditional closed source software distribution models are combined.

NOTE: If your company has a policy forbidding open source in your product, all QP frameworks can be licensed commercially, in which case you don't use any open source license and you do not violate your policy.

If you are developing and distributing open source applications under the GNU General Public License (GPL), as published by the Free Software Foundation, then you are free to use the Quantum Leaps software under the GPL version 3 of the License, or (at your option) any later version. Please note that GPL requires that all modifications to the original code as well as your application code (Derivative Works as defined in the Copyright Law) must also be released under the terms of the GPL open source license.

If you are developing and distributing traditional closed source applications, you can purchase one of Quantum Leaps commercial licenses, which are specifically designed for users interested in retaining the proprietary status of their code. All Quantum Leaps commercial licenses expressly supersede the GPL open source license. This means that when you license Quantum Leaps software under a commercial license, you specifically do not use the software under the open source license and therefore you are not subject to any of its terms.

Quantum Leaps, LLC Web: www.state-machine.com Email: info@state-machine.com