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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 Professional

The industry-leading DDS implementation customers trust to rapidly develop, integrate and evolve critical distributed systems.

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Connext Professional
Best to Start With

Offers unmatched technical resources, onboarding, tools and integrations to maximize developer productivity and establish an evolvable architecture that avoids costly rework.

Best to Deploy On

Minimizes deployment time and project risk, providing a secure, field-proven and powerful architecture with over 2,000 design wins worldwide.

Best to Evolve With

Scales with you as market, integration, and system requirements evolve, with the breadth of features and support needed to accelerate development and sustain competitive advantage.

When everything is at stake, architects and developers choose Connext Professional to rapidly build critical systems

Connext Professional is the most trusted software infrastructure for mission-critical systems, brought to you by the company that co-authored the Data Distribution Service (DDSTM) standard.  Why risk your project’s long-term success on another DDS implementation when you can choose one used in over 2,000 of the world's most demanding system designs?

Connext Professional is field-proven in Aerospace & Defense, Healthcare, Robotics, and other demanding industries to distribute critical real-time data with the highest levels of reliability. It provides a rich development environment and ecosystem for distributed applications, accelerating all system life cycle phases to help you continuously deliver on time, on budget, and on spec.

Connext Professional allows applications to work together as one integrated system, with the dependability and scalability you need as your business grows.


Features to Help Your Business Evolve

Unrivaled Support for Language, Platform, Transport, Standards and Communication Patterns

RTI Connext offers a comprehensive suite of language, platform, transport, standards, and communication patterns support and compliance, providing unmatched value for developers and teams aiming to maximize flexibility and future-proof their projects. 

RTI Connext maximizes productivity by using the language best suited to each application and developer skill set. Supported languages include: 

C, Traditional C++, Modern C++, Python, C#/.NET, Java, Ada, JavaScript (node.js)^, LabVIEW*, Simulink*, REST/HTTP


^ Experimental product

* Third-party product 

RTI Connext helps users develop and deploy applications that interoperate seamlessly across heterogeneous and diverse platforms, from resource-constrained devices at the edge to containers in the cloud. Operating systems include:

Linux, Windows, macOS, VxWorks, QNX, INTEGRITY, Android, Deos, QNX OS for Safety INTEGRITY-178, FreeRTOS, SafeRTOS, LynxOS-178, ThreadX, Helix Virtualization Platform, AUTOSAR

x86, x64, ARM, PowerPC, Custom*



* Custom through arrangement with RTI 

RTI Connext optimizes performance and deployment flexibility from within the same process, as well as for processes distributed around the globe (or even in space). Transports include:

Shared memory, UDPv4, UDPv6, Real-time WAN Transport,  unicast and multicast, TCP, TLS*, Low bandwidth.


* Require Security Extensions

RTI Connext helps ensure long-term interoperability and compatibility with other DDS implementations by leading in the development of evolving OMG DDS standards.

DDS 1.4*, DDS Wire Protocol (RTPS) 2.2*, DDS Security 1.1*#, C++ Language DDS PSM 1.0, XTypes: Extensible and Dynamic Topic Types 1.3*, RPC over DDS 1.0*, Web-Enabled DDS 1.0*, DDS XML Syntax 1.0*, IDL 4.2*.


* RTI is Lead Author

# Requires Security Extensions

RTI Connext offers comprehensive Communication Patterns support to minimize the cost and complexity of employing disparate use case-specific middleware solutions. It streamlines application migration and simplifies development by enabling the use of the most intuitive patterns for each interaction.

  • Data-Centric Publish Subscribe for broad real-time data distribution (one-to-many and many-to-many) and streaming data
  • Request-reply for service invocations and command-response
  • Queuing for load balancing and transaction processing
  • Historical Data Query: Efficient retrieval from publishing applications' caches on demand, enabling access to historical data even if not initially subscribed to

Connext in

Watch this brief overview of RTI Connext for the basics of what it is and how it works.

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Looking for additional information?

Connext Professional Datasheet

Connext Professional Datasheet

Read more about the industry's most robust and productive development environment for autonomous systems.

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Check Out These Customer Applications

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

Simple & Fair Pricing

Depending on the nature of your project, pricing options include Commercial, Research, Academic and Open Source licenses. We also offer a free trial.

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 Connext, 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 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.