OMNEST is the commercial version of OMNeT++, one of the most popular network simulation frameworks in academic and research communities. OMNeT++ is distributed under the Academic Public License that does not allow commercial use.

OMNEST and OMNeT++ are nearly identical, simulation models written for OMNeT++ are guaranteed to compile and run with OMNEST, and vice versa. Differences apply to licensing, packaging, and certain features only.

License Academic Public License1 Commercial License
Commercial use not allowed1 allowed
Simulation kernel, tools, examples, documentation yes yes
Eclipse-based Simulation IDE yes yes
Support for all major operating systems2 yes yes
Windows installer no
(distributed as zip)
Pre-compiled (and tested) simulation libraries for Windows no yes3
Support for Microsoft Visual C++ no yes
Support for the GCC Compiler4 yes yes
Documentation Generation
(example: INET)
under Creative Commons5
SVG Image Export6 no yes
SystemC Integration7 no yes
HLA Support8 no yes
Support informal, via the mailing list guaranteed 48-hour email support available
Service Releases informal guaranteed after significant fixes, but at least every 6 months
1 if you are unsure whether you need a commercial license, please check the Licensing FAQ
2 the IDE is supported on Linux, Mac OS X and Windows; the simulation kernel and models can be compiled on other platforms as well
3 for MinGW and recent versions of Visual C++
4 including MinGW on Windows
5 with OMNeT++, generated documentation is under the Creative Commons license. OMNEST does not contain this limitation.
6 for models and sequence charts
7 allows for mixing OMNEST and SystemC modules in the same simulation program
8 allows OMNEST simulations to join HLA (IEEE 1516) federates