The RToolkit
Open Source Object Oriented Distributed Simulation Framework

Features

Implemented in C++, open source and cross platform.
Supports both DOD 1.3 and IEEE 1516 HLA standards with a unified and simplified API.
Enables to develop federates both for DOD 1.3 and IEEE 1516 standards without rewriting the source code.
It is possible to adapt simulations to existing or future HLA standards (like HLA Evolved) without changing simulation code.
Can be used with commercial or open source RTI implementations which conforms to DOD and IEEE standards.
FOM agile and can be easily customized to adopt different FOMs.
Uses well known design patterns and programming paradigms like signals and slots for robust implementation.
Simplfy the federate and federation development process.
Improves reuse and reduces the development effort.
Provides an infrastructure above low level RTI API to improve extensibility and to reduce cost of software development and maintenance.
Provides a codebase for the solution of common problems faced by the HLA federate developers.