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RTI is the world’s largest DDS supplier and Connext is the most trusted software framework for critical systems.

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From downloads to Hello World, we've got you covered. Find all of the tutorials, documentation, peer conversations and inspiration you need to get started using Connext today.

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RTI provides a broad range of technical and high-level resources designed to assist in understanding industry applications, the RTI Connext product line and its underlying data-centric technology.


RTI is the infrastructure software company for smart-world systems. The company’s RTI Connext product is the world's leading software framework for intelligent distributed systems.

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Connext Cert

The first safety-certifiable software framework for safety and mission-critical real-world systems.

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Connext Cert
Open Architecture Alignment

Aligns with industry-leading open architecture initiatives

Highest Safety Certification

Streamlines safety certification efforts

Reduces Code and Costs

Eliminates the need for custom code

DDS Standard Compliant

Eases system development,
integration and maintenance



Complete Certification Software for Real-World Systems

Connext Cert is a software framework, based on the DDS standard, that enables system architects to build open and modular, safety-critical and real-world systems. Connext Cert can:

  • Simplify application logic and eliminate the need for custom networking code through powerful run-time libraries that provide publish/subscribe communication APIs.
  • Eliminate tens of thousands of lines of application software code and the need to generate accompanying certification artifacts.
  • Reduce the time, cost and risk of device and system-level certification.
  • Provide reusable certification evidence: A baseline for other industry-specific functional safety standards including IEC 61508 (industrial), IEC 60601/IEC 62304 (medical devices),  DO-178C (avionics), and ISO 26262 (automotive).

Supports Cost-Avoidance Initiatives

Connext Cert can save tens of thousands of lines of application software code and millions of dollars in associated integration costs. It aligns with industry-leading open architecture initiatives including FACETM, UCS and OMS.

Highest Safety Certification

The only off-the-shelf connectivity framework certifiable to the DO-178C DAL A certification standard and supporting pathways to ISO 26262 ASIL D and IEC 61508 SIL 3.

Reduces Code and Costs

Commercially-supported infrastructure that reduces custom communication and integration code, and the need to generate accompanying certification artifacts, slashing development time and expense. 

Supports Constrained Systems

Ideally suited for autonomous and distributed environments with challenging Size, Weight and Power (SWaP) constraints, such as Integrated Modular Avionics (IMA). Highly portable across safety-critical operating systems and CPUs, including those that support POSIX or ARINC 653.

Compliant with DDS Standard

A standards-based solution, compliant with the DDS programming interface and RTPS wire interoperability protocol. Interoperates peer-to-peer across DDS implementations.


Slash Avionics Costs with Connext Cert

Watch this example from the avionics industry on lowering costs with Connext Cert.

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Looking for more? Check these out:

Connext Cert Datasheet

Connext Cert Datasheet

Learn more about this comprehensive messaging solution

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Connext Cert for Connext Drive Datasheet

Connext Cert is a certified software framework for automotive safety systems

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Check Out These Customer Snapshots

RTI Connext is proven in real-world applications across industries to connect and secure mission-critical, intelligent systems.

Simple & Fair Pricing

Try a fully-functional version of Connext, the leading software connectivity framework for distributed systems.

Commercial Licenses

Pricing is based on the number of developers using Connext on your project. Distribution of applications that use RTI core products is royalty-free.

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Try a fully-functional version of the leading software connectivity framework for distributed systems.

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Research & University Programs

RTI is committed to supporting universities in their research labs and classroom projects. We offer a free, one-year, renewable license to Connext Secure for academic, noncommercial use.

Research & Non-commercial

RTI offers special license programs for qualified research and non-commercial use. Download a free trial to apply.