aid: green-hills-software
name: Green Hills Software
description: >-
  Green Hills Software is a privately held embedded software company founded in 1982 by Dan O'Dowd
  and Carl Rosenberg and headquartered in Santa Barbara, California. It builds safety- and
  security-certified real-time operating systems (INTEGRITY, INTEGRITY-178 tuMP, u-velOSity),
  embedded hypervisors (INTEGRITY Multivisor, u-visor), optimizing C/C++/Ada/Fortran compilers,
  the MULTI and AdaMULTI integrated development environments, the TimeMachine back-in-time debug
  suite, the DoubleCheck static analyzer, the Green Hills Probe hardware debugger, and networking,
  file-system and USB middleware. Its customers ship these components inside aerospace, defense,
  automotive, medical, industrial, rail, telecommunications and consumer devices. Green Hills is a
  toolchain and operating-system vendor rather than an API provider: the programmable interfaces it
  ships are in-product C/C++, POSIX and MULTI-Python scripting APIs delivered with a licensed
  installation and documented in manuals distributed with the product, and its technical support
  portal at support.ghs.com requires an account. No public web API, developer portal, or
  machine-readable API description was found on any Green Hills host during enrichment.
image: https://www.ghs.com/images/logos/ghs_logo_hires2.png
url: https://raw.githubusercontent.com/api-evangelist/green-hills-software/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-22'
modified: '2026-08-22'
tags:
- Company
- Embedded Systems
- Real-Time Operating Systems
- RTOS
- Compilers
- Developer Tools
- Debugging
- Virtualization
- Safety Critical
- Automotive
- Aerospace and Defense
- Cybersecurity
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/green-hills-software-domain-security.yml
- type: Website
  url: https://www.ghs.com/
- type: Products
  url: https://www.ghs.com/products.html
- type: Support
  url: https://support.ghs.com/
- type: Blog
  url: https://www.ghs.com/news/index.html
- type: BlogRSS
  url: https://www.ghs.com/news/news_feed.xml
- type: PrivacyPolicy
  url: https://www.ghs.com/policies/privacy_policy.html
- type: Contact
  url: https://www.ghs.com/contact/index.html
- type: Training
  url: https://www.ghs.com/training.html
- type: Partners
  url: https://www.ghs.com/partners/index.html
- type: About
  url: https://www.ghs.com/corporate/index.html
- type: LinkedIn
  url: https://www.linkedin.com/company/green-hills-software/
- type: Plans
  url: plans/green-hills-software-plans-pricing.yml
- type: RateLimits
  url: rate-limits/green-hills-software-rate-limits.yml
- type: Conformance
  url: conformance/green-hills-software-conformance.yml
- type: Compliance
  url: conformance/green-hills-software-conformance.yml
- type: LLMsTxt
  url: llms/green-hills-software-llms.txt

x-enrichment:
  date: '2026-08-22'
  status: minimal
  artifacts_added: 7
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: >-
    Green Hills Software ships an embedded RTOS and compiler toolchain as licensed end-user
    products and runs no developer program at all - no API host, no developer portal, no SDK in
    any public registry, and its only technical documentation surface (support.ghs.com) 302s
    every FAQ, application-note and download path to an email-link login.
  evidence:
    - url: https://www.ghs.com/openapi.json
      status: 404
    - url: https://www.ghs.com/.well-known/api-catalog
      status: 404
    - url: https://support.ghs.com/faq/
      status: 302
    - url: https://www.ghs.com/pricing.html
      status: 404
  checked: '2026-08-22'