Download Opnet Modeler 16.1 _verified_ May 2026

If you are looking for OPNET Modeler 16.1, you should know that the software was acquired by Riverbed Technology and has since been rebranded as Riverbed SteelCentral AppResponse or Riverbed Modeler.

8) Verify installation

• Launch Modeler and run a sample simulation/example project.
• Confirm license check passes and simulation runs.

If you are unable to download or use OPNET Modeler 16.1, you can consider alternative network simulation software, such as: download opnet modeler 16.1

1. Contact Riverbed Support (For Existing Customers)

If your employer, university, or research lab purchased OPNET Modeler 16.1 when it was current, they may have an archived installer. Riverbed’s enterprise support sometimes provides legacy installers to verified license holders. If you are looking for OPNET Modeler 16

System Requirements (Windows 7/XP era)

• OS: Windows 7 SP1 (32-bit recommended), Windows Server 2008.
• CPU: 2.0 GHz dual-core.
• RAM: 2 GB minimum (4 GB for large simulations).
• Disk: 4.5 GB free space.
• Other: Microsoft Visual C++ 2008 Redistributable.

If you are looking for OPNET for educational or professional use, here is the modern landscape: What is Opnet? Competitors, Complementary Techs & Usage Launch Modeler and run a sample simulation/example project

• Warning: Always scan any downloaded file with up-to-date antivirus software. OPNET installers from unofficial sources are frequently repackaged with malware.

Academic Institutions: Check with your university's IT department or engineering lab, as many institutions provide pre-licensed versions of OPNET 16.1 for student use.  Installation Requirements  Operating System: Windows (Standard) or Linux (Enterprise).

Documentation: Complete the installation with the official documentation files.