# OpenDDS/OpenDDS

OpenDDS is an open source C++ implementation of the Object Management Group (OMG) Data Distribution Service (DDS). OpenDDS also supports Java bindings through JNI.

Repository: https://github.com/OpenDDS/OpenDDS
Canonical: https://ross.abutalabs.com/products/opendds
Homepage: http://www.opendds.org
Language: C++
License: NOASSERTION
License Family: other
Topics: dds, c-plus-plus, java, opendds
Last push: 2026-08-26T15:57:55+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 60, longevity 100
- inputs: {"age_days": 4220, "days_push": 7, "days_rel": 104, "gap_med": 102.5, "n_releases_24m": 5}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1513, forks 515 (observed 2026-08-28T04:04:56.301591+00:00)

## What it is
OpenDDS is an open-source C++ implementation of the OMG Data Distribution Service (DDS) specification for real-time publish-subscribe data distribution, with Java bindings via JNI. It supports DDS Security and XTypes, is built on the ACE/TAO abstraction layer, and runs on Windows, Linux, macOS, and Raspberry Pi.

## Use cases
- implement publish-subscribe messaging between distributed C++ applications
- build real-time high-volume data distribution systems
- use DDS from Java applications via JNI bindings
- add secure data distribution with the DDS Security specification
- develop fault-tolerant distributed cache applications
- connect embedded and IoT devices with a standard data bus

## When to choose
- you need an OMG DDS-compliant middleware in C++ with Java support
- your system requires real-time, reliable, high-volume publish-subscribe data distribution
- you need DDS Security or XTypes support in an open-source implementation
- you want a free, permissively licensed DDS that can be used in proprietary software

## When to avoid
- you need a lightweight message broker rather than a DDS data bus
- your project uses languages other than C++ or Java
- you want a managed cloud messaging service rather than an embeddable library
- you need simple REST or queue-based messaging instead of typed pub-sub middleware

## Facets
- artifact type: library
- maturity: active
- function: middleware, rpc, serialization, security
- domain: microservices, apis, developer-tools
- platform: cpp, jvm, windows, cross-platform
- tags: dds, publish-subscribe, data-distribution-service, real-time-systems, jni-bindings, xtypes, dds-security, ace-tao, real-time, linux, macos, docker

## Member repositories
- OpenDDS/OpenDDS (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:56.301591+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:32:14.058626+00:00, confidence not recorded.
  - readme: https://github.com/OpenDDS/OpenDDS (fetched 2026-08-28T04:04:56.301591+00:00, sha e953297c57c6)
  - homepage: http://www.opendds.org (fetched 2026-08-29T11:35:59.461541+00:00, sha c94918a3a66f)
  - site_page: https://opendds.org/quickstart (fetched 2026-08-29T11:35:59.474290+00:00, sha 346b92eec0df)
  - site_page: https://opendds.org/quickstart/GettingStartedWindows.html (fetched 2026-08-29T11:35:59.501115+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/quickstart/GettingStartedLinux.html (fetched 2026-08-29T11:35:59.513195+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/quickstart/GettingStartedPi.html (fetched 2026-08-29T11:35:59.515116+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/quickstart/GettingStartedDocker.html (fetched 2026-08-29T11:35:59.516824+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/quickstart/GettingStartedShapesDemo.html (fetched 2026-08-29T11:35:59.518335+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/about (fetched 2026-08-29T11:35:59.519883+00:00, sha 13d04ca15538)
  - site_page: https://opendds.org/about/license.html (fetched 2026-08-29T11:35:59.521293+00:00, sha 0ee095cb369c)
- Data as of 2026-08-30T08:39:29.467469+00:00.