Thank you for your interest in using RTI software for your project. You can find installation instructions in the Getting Started Guide (PDF). By downloading Connext DDS, you acknowledge that you agree to the RTI Software License Agreement.

An rti_license.dat license file is required in order to use this software. If you do not already have a current license file, you may acquire one in a number of ways:

  • Submit the free trial download form and a license file will be emailed to you. You do not need to install the free trial software. For the Connext 5.3.1 version (required by ROS 2), use the below downloads in lieu of the free trial downloads.
  • Contact your account manager or if you need assistance.



 x86 64-bit
 Ubuntu 18.04 LTS (kernel 4.x, gcc 7.3.0)


Microsoft Windows

 x86 64-bit
 Windows 10, Server 2016 (Visual Studio 2017)



 x86 64-bit
 macOS High Sierra 10.13 (clang 9.0)