What Green Hills Software does

Green Hills Software is a privately held, founder-controlled embedded software company headquartered in Santa Barbara, California, founded in 1982 and operating globally across 50+ countries with a regional subsidiary in Japan (Green Hills Software GK). The company develops and licenses safety- and security-critical real-time operating systems, hypervisors, and development tools that serve as the foundational software layer for embedded systems in aerospace and defense, automotive, industrial safety, medical devices, secure networking, and software-defined radio. Its flagship technology is the INTEGRITY separation kernel microkernel RTOS, augmented by INTEGRITY-178 tuMP for multicore avionics and defense applications, µ-velOSity for microcontroller-class devices, and the INTEGRITY Multivisor and µ-visor hypervisors for mixed-criticality consolidation. The development toolchain comprises the MULTI IDE with TimeMachine back-in-time debugging, AdaMULTI, the Green Hills optimizing C/C++/Ada compilers, and the DoubleCheck static analyzer, plus hardware debug probes. The INTEGRITY RTOS holds the highest certifications in its class — DO-178C DAL A, Common Criteria EAL 6+ High Robustness / NSA SKPP, ISO 26262 ASIL D, IEC 61508 SIL 3, EN 50128 SIL 4 — and has reported zero kernel vulnerabilities across 28+ years of deployment.

Name

Green Hills Software

Legal name

Green Hills Software LLC

Website

https://ghs.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

251–500 employees

Short description

Green Hills Software is a privately held embedded software company founded in 1982 that provides safety- and security-certified real-time operating systems, hypervisors, and development tools for aerospace, defense, automotive, industrial, medical, and networking customers.

Ownership category

akta.pro rank

Headquarters

HQ city

Santa Barbara

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Software Licenses and Royalties: Green Hills Software licenses its RTOS, hypervisors, and development tools to embedded systems manufacturers. Licensing includes perpetual and term options, with support and maintenance agreements. Revenue is generated from semiconductor OEMs, Tier 1 automotive suppliers, aerospace and defense contractors, and industrial equipment manufacturers embedding Green Hills software in their products.
2. Development Tools and Compilers: MULTI IDE, optimizing compilers (C/C++/Ada), debugging tools (TimeMachine, DoubleCheck), and processor probes are sold as licenses to embedded software developers. Toolchain licenses are certified for functional safety standards (ISO 26262 ASIL D, IEC 61508 SIL 4) enabling use in safety-critical development.
3. Professional Services and Certification Support: Green Hills provides training, consulting, and certification support services to help customers achieve safety and security certifications for their products. Services include BSP development, functional safety consulting, certification evidence preparation, and custom engineering.
4. Long-Term Maintenance and Support: Ongoing support contracts providing security patches, feature updates, vulnerability reporting, and compliance updates for the life of the product. Covers INTEGRITY RTOS, MULTI toolchain, and middleware components deployed in customer products.

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels7 records

Core offering

Green Hills Software develops and licenses safety- and security-certified real-time operating systems (INTEGRITY RTOS, INTEGRITY-178 tuMP, µ-velOSity), secure hypervisors (INTEGRITY Multivisor, µ-visor), and integrated development tools (MULTI IDE, optimizing C/C++/Ada compilers, TimeMachine debugger, DoubleCheck analyzer) for embedded systems in aerospace, defense, automotive, industrial, medical, and networking markets.

Product overview

Green Hills Software provides a comprehensive embedded software platform consisting of three main product categories: (1) Operating Systems including INTEGRITY RTOS (flagship microkernel-based RTOS), INTEGRITY-178 tuMP RTOS (multicore safety-critical variant), and µ-velOSity RTOS (small footprint microcontroller OS); (2) Development Tools including MULTI IDE (integrated development environment), MULTI IDE for Embedded Linux, AdaMULTI IDE, Green Hills Optimizing Compilers (C/C++/Ada), TimeMachine Debugging Suite (back-in-time debugging), DoubleCheck Static Analyzer, and hardware debug probes (SuperTrace Probe, Green Hills Probe V4); (3) Virtualization Solutions including INTEGRITY Multivisor (secure hypervisor for application processors) and µ-visor Hypervisor (for microcontrollers). The company also offers industry-specific platform solutions for Automotive, Industrial Safety, Medical Devices, Aerospace & Defense, Secure Networking, and Software Defined Radio, each bundling appropriate RTOS, development tools, middleware, and certification support. All tools are certified to highest functional safety standards (ISO 26262 ASIL D, IEC 61508 SIL 3, DO-178C DAL A) and security standards (EAL 6+, NSA SKPP High Robustness).

Differentiator

Problem solved

Functional benefit

Brands

• INTEGRITY: The flagship real-time operating system (RTOS) product line of Green Hills Software, including INTEGRITY RTOS, INTEGRITY-178 tuMP RTOS, and related safety and security solutions.
• MULTI
• µ-velOSity
• µ-visor
• INTEGRITY Multivisor
• TimeMachine
• DoubleCheck

Products and services

• INTEGRITY RTOS Flagship microkernel-based real-time operating system providing memory-protected separation, guaranteed CPU and memory resources, hard real-time determinism, and certified safety/security for embedded applications across automotive, industrial, medical, and networking markets.
• INTEGRITY-178 tuMP RTOS Multicore safety- and security-critical RTOS supporting AMP, SMP, and Bound Multiprocessing (BMP) modes with Time-variant Unified Multi-Processing (tuMP) scheduling; certified to DO-178C DAL A and Common Criteria EAL 6+ High Robustness for airborne and defense applications.
• µ-velOSity RTOS Small-footprint microkernel RTOS for memory-constrained microcontrollers supporting Arm Cortex-M, Cortex-R, and RISC-V; certified to ISO 26262 ASIL D, IEC 61508 SIL 3, EN 50128 SIL 4, and ISO 21434.
• INTEGRITY Multivisor Optional secure virtualization service for INTEGRITY RTOS that runs general-purpose guest operating systems (Linux, Android, Windows) alongside life- and mission-critical software on the same multicore processor with hardware virtualization acceleration.
• µ-visor Hypervisor Hypervisor for microcontrollers providing hardware-enforced separation, virtual ECUs with freedom-from-interference, protected critical registers, and peripheral bus guards targeting ISO 26262 ASIL D and IEC 61508 SIL 3.
• MULTI IDE Integrated development environment for embedded software with advanced system viewer, TimeMachine back-in-time debugging, DoubleCheck static analyzer, multicore debugging, OS awareness, and performance profiler; supports multiple processor architectures on Windows and Linux hosts and is certified to ISO 26262 ASIL D, IEC 61508 SIL 4, and EN 50128 SIL 4.
• AdaMULTI IDE Ada development environment based on MULTI IDE supporting Ada and C++ compilers with source-level symbolic debugger and certified run-time options including INTEGRITY-178 tuMP integration.
• MULTI IDE for Embedded Linux Debugging and visualization tools for embedded Linux development providing visibility into Linux kernel, kernel threads, interrupt service routines, and user-mode threads; supports SMP multicore debugging and virtualized Linux on INTEGRITY Multivisor.
• Green Hills Optimizing Compilers C, C++, and Ada optimizing compilers generating the fastest and smallest code for embedded processors with 20%+ improvements over GNU and LLVM; certified to ISO 26262 ASIL D, IEC 61508 SIL 4, and EN 50128 SIL 4.
• TimeMachine Debugging Suite Innovative trace analysis suite enabling debugging both forward and backward in time with PathAnalyzer, EventAnalyzer, Profiler, and real-time hardware trace with Green Hills Probe V4.
• DoubleCheck Code Analyzer Integrated static source code analyzer built into Green Hills compilers performing full program analysis to identify NULL pointer dereferences, buffer overflows, resource leaks, and uninitialized reads; 5x faster than traditional static analysis tools and up to 20x faster with distributed build engine.
• SuperTrace Probe Hardware debug probe capturing up to 4 GB of trace data at clock speeds up to 1.2 GHz with RTOS-aware debugging integrated with MULTI IDE and TimeMachine.
• Green Hills Probe V4

Quantifiable outcome

• INTEGRITY RTOS has zero kernel vulnerabilities reported in 28 years of deployment
• +6 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration23 records

AI capability3 records

Feature9 records

Partnerships

Nine partnerships are on record, tiered core.

• AISIN CorporationcoreStrategic or Co-development Partner · 27 May 2026AISIN selected Green Hills Software as the software foundation for its next-generation Driver Monitoring System with Alcohol Detection System (DADS), integrating Smart Eye's AI-based monitoring and NXP Semiconductors' i.MX 9 series processors. The four-party collaboration aims to deliver advanced in-cabin safety systems to vehicle manufacturers at production scale, targeting first production release in 2028. Green Hills provides its ISO 26262 ASIL safety-certified real-time operating systems for the safety-critical driver monitoring ECU.
• NXP SemiconductorscoreTechnology or Integration · 26 May 2026NXP Semiconductors collaborated in the AISIN Driver Monitoring System where Green Hills RTOS runs on NXP's i.MX 9 series processors. Green Hills is also a leading partner in NXP's CoreRide platform for automotive domain controllers and zonal architectures. The collaboration enables automotive manufacturers to leverage NXP's automotive processors with Green Hills' safety-certified software foundation.
• AMDcoreStrategic or Co-development Partner · 6 May 2026Green Hills Software and AMD collaborated to provide an integrated hardware and software solution for the AMD Versal AI Edge Series Gen 2 adaptive system-on-chip, targeting safety- and security-critical applications in automotive, aerospace, healthcare, and robotics. The solution features Green Hills' safety-certified RTOS, hypervisors, compilers, and development tools designed to meet ASIL D / SIL 3 requirements. The partnership enables manufacturers to consolidate mixed-criticality ECU functions while reducing software development costs and accelerating time-to-production.
• Northrop GrummancoreOEM/ Whitelabel/ Licensing Partner · 28 April 2026Northrop Grumman integrated Green Hills Software's INTEGRITY-178 tuMP RTOS into its LN-351 Embedded GPS/Inertial Navigation System-Modernization (EGI-M) for US military aircraft. This marked the first production delivery of the upgraded system, which combines inertial navigation with an M-Code-capable GPS receiver. Initial deployment includes the E-2D Advanced Hawkeye and F-22 Raptor, with full-rate manufacturing expected as part of a broader US effort to strengthen navigation systems against electronic warfare threats.
• Texas InstrumentscoreStrategic or Co-development Partner · 10 March 2026Green Hills Software created a complete production-focused software development environment for Texas Instruments' TDA5 SoC family, featuring safety-certified RTOSes, hypervisors, and development tools that support all Arm processor cores including Cortex-A720, Cortex-R52+, and Cortex-M55. The platform, developed in collaboration with TI and Synopsys using Synopsys' Virtualizer Development Kit, enables vehicle manufacturers to begin production-focused software development before silicon is available.
• MIPS (GlobalFoundries)coreStrategic or Co-development Partner · 9 March 2026MIPS (now part of GlobalFoundries) partnered with Green Hills Software to develop a joint Safety Software Development Kit (Safety SDK) for RISC-V microcontrollers. The solution combines MIPS' M8500 processor architecture with Green Hills' certified development tools and RTOS, targeting ASIL-D and SIL 3/4 functional safety certification for automotive and industrial applications. The companies are gathering requirements from early access customers and plan to provide evaluation platforms and motor control demonstrations.
• Curtiss-WrightcoreStrategic or Co-development Partner · 13 January 2026Curtiss-Wright and Green Hills Software jointly announced a new commercial off-the-shelf (COTS) computing platform for safety-critical avionics and aerospace systems. The platform combines Curtiss-Wright's SOSA-aligned V3-1222 3U VPX processing module with Green Hills Software's FACE-certified INTEGRITY-178 tuMP RTOS. Designed to reduce integration risk and accelerate development timelines for programs with stringent airworthiness requirements in defense and commercial aviation. Supports multicore processing targeting the highest Design Assurance Level (DAL A) under DO-178C and DO-254 standards.
• Smart EyecoreStrategic or Co-development Partner · 5 January 2026Smart Eye and Green Hills Software demonstrated an integrated driver monitoring and mixed-criticality platform at CES 2026. The production-focused demonstration showcased Smart Eye's driver monitoring system running alongside a digital instrument cluster on a single ECU powered by Green Hills' ASIL-certified INTEGRITY RTOS. The combined solution allows automakers to consolidate mixed-criticality applications while maintaining safety isolation, reducing integration complexity and validation cycles to meet EU General Safety Regulation and Euro NCAP requirements.
• Infineon TechnologiescoreStrategic or Co-development Partner · 21 October 2025Green Hills Software and Infineon Technologies released an integrated hardware and software development platform for Infineon's new PSOC Edge microcontroller, enabling high-performance, low-power edge AI applications. The platform incorporates Green Hills' advanced safety-certified development tools and Infineon's microcontroller designed for secure, machine learning-enhanced sensing and HMI applications.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• BlackBerry QNX: BlackBerry QNX is the most direct competitor to Green Hills in safety-critical RTOS for automotive and embedded applications. QNX Neutrino and QNX OS for Safety compete head-to-head with INTEGRITY RTOS in automotive instrument clusters, infotainment, ADAS, and autonomous driving platforms, serving similar Tier 1 and OEM customers.
• Wind River Systems: Wind River's VxWorks RTOS is a direct competitor to INTEGRITY-178 tuMP in aerospace, defense, and industrial safety-critical applications. Both companies serve commercial aviation, military, and industrial customers with DO-178C and IEC 61508 certified RTOS platforms, and Wind River is also expanding into automotive with Helix virtualization, mirroring Green Hills' Multivisor approach.
• SYSGO: SYSGO's PikeOS separation-kernel and hypervisor platform directly competes with INTEGRITY Multivisor and µ-visor in automotive, aerospace, railway, and industrial embedded markets. Named alongside Green Hills as a Leader in ABI Research's Commercial RTOS for Robotics Functional Safety ranking, SYSGO pursues similar mixed-criticality consolidation use cases for European automotive and rail customers.
• Lynx Software Technologies: Lynx Software Technologies develops LynxOS-178, a safety-critical RTOS targeting DO-178C certification for avionics and military applications, directly competing with INTEGRITY-178 tuMP. Both companies serve aerospace and defense customers requiring the highest levels of safety certification and security robustness, with Lynx historically strong in U.S. military programs.
• ETAS: ETAS, a Bosch subsidiary, provides automotive safety software including RTA-OS RTOS and ASCET modeling tools that compete with Green Hills' MULTI IDE and INTEGRITY RTOS in the automotive Tier 1 supplier ecosystem. Both companies target ISO 26262 ASIL D certified development workflows and serve similar European automotive OEMs and Tier 1s.
• Elektrobit (Continental): Elektrobit provides automotive embedded software including EB tresos AUTOSAR solutions and basic software modules that compete with Green Hills' automotive platform offerings. Both companies serve automotive OEMs requiring ISO 26262 and ISO/SAE 21434 certified software for next-generation vehicle architectures, with Elektrobit strong in AUTOSAR Classic and Adaptive stacks.
• Vector Informatik: Vector Informatik provides AUTOSAR basic software, embedded development tools, and testing solutions that compete with MULTI IDE and Green Hills' automotive development toolchain. Both companies serve automotive Tier 1s and OEMs with safety-certified software stacks and engineering services, with Vector particularly strong in CAN/LIN/FlexRay tooling and vehicle diagnostics.

Broad incumbents

• Arm (Keil and Development Tools): Arm provides Keil MDK development tools and the Arm Compiler that compete with MULTI IDE and Green Hills Optimizing Compilers in the embedded development market. While Arm is more broadly focused on processor IP and broader tooling, its safety-qualified Arm Compiler and Keil tools serve many of the same embedded developers who might otherwise use Green Hills' toolchain, particularly on Cortex-M and Cortex-R microcontrollers.

Others

• NXP Semiconductors: NXP is a strategic partner of Green Hills (i.MX, S32 CoreRide platforms) but also competes as a semiconductor vendor offering integrated hardware/software solutions where NXP's processors ship with bundled or alternative RTOS options. NXP's strategic partnership with Green Hills alongside its broader automotive processor portfolio makes it both an enabler and an adjacent ecosystem participant.
• Lauterbach: Lauterbach provides high-end JTAG debug probes and trace tools (TRACE32) that compete directly with Green Hills' SuperTrace Probe and Green Hills Probe V4. Both companies sell into the same embedded development customer base for multicore debugging and trace analysis, with Lauterbach often used alongside or as an alternative to Green Hills' hardware debug solutions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/greenhillspr
• Facebookfacebook.com/GreenHillsSoftware
• LinkedInlinkedin.com/company/green-hills-software/posts/?feedView=all

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Green Hills Software