Green Hills Software
Track on RadarEmbedded RTOS, hypervisors & dev tools for safety-critical OT/defense systems.
- Total raised
- —
- Employees
- 266
- Founded
- 1982
- Momentum
- 20
Stalling
Data updated August 2026
About
About Green Hills Software
At a glance
Green Hills Software is a cybersecurity company specializing in Cyber-Physical Security, founded in 1982 and headquartered in Santa Barbara, United States. It employs about 266 people and is privately held.
Green Hills Software, founded in 1982, develops real-time operating systems (RTOS), embedded development tools, optimizing compilers, and hypervisors for safety-critical and security-critical embedded systems. The company serves markets including aerospace and defense, automotive, industrial, medical, consumer electronics, and networking/telecom. Their core product line centers on the INTEGRITY RTOS family, which includes INTEGRITY, INTEGRITY-178 tuMP (certified to EAL 6+ and DO-178B/C), and µ-velOSity RTOS. Virtualization products include the INTEGRITY Multivisor and µ-visor Hypervisor. Development tools include the MULTI IDE, AdaMULTI IDE, optimizing compilers, the TimeMachine Debugger, and the DoubleCheck static analyzer. Hardware debug products include processor probes such as the SuperTrace Probe and Green Hills Probe V4. OS middleware covers networking, file systems, and USB stacks. The company's software supports multiple processor architectures including Arm, Power Architecture, Intel, RH850, RISC-V, and AURIX/TriCore. Their INTEGRITY RTOS has been deployed in high-assurance programs such as the F-35 fighter jet avionics and certified helicopter engine controls (FADECs). Green Hills Software also offers professional services including training, consulting, performance tuning, and production customization. Their security-focused RTOS products are designed to enforce separation between software components, supporting mixed-criticality system architectures commonly required in aerospace, defense, and automotive safety applications.
Momentum
How Green Hills Software is trending
Momentum score
Score history appears once we have at least two monthly snapshots.
Pillar breakdown
Pillar breakdown locked
Growth, Market & Financial sub-scores
Valuation
What Green Hills Software is worth
Estimated valuation
Products
Green Hills Software's products
Funding
Funding history
See every round, lead investor, and the full capital stack.
Open the full profile on Mandos to see funding history.
Public markets
Stock performance
Privately held
This company isn't publicly traded. Stock performance will appear here after an IPO.
Headcount
Headcount growth
Track hiring velocity, department mix, and seniority shifts.
Open the full profile on Mandos to see headcount growth.
Jobs
Open jobs
Every live posting, hiring pace, and role-level signal.
Open the full profile on Mandos to see open jobs.
Web traffic
Digital presence
Visits trend, bounce rate, engagement, and top countries.
Open the full profile on Mandos to see digital presence.
Tech stack
Technologies
The full stack behind the product — frameworks, clouds, security.
Open the full profile on Mandos to see technologies.
M&A
Acquisitions
Every acquisition this company has made, with dates and amounts.
Open the full profile on Mandos to see acquisitions.
Reviews & sentiment
Employee & product reviews
CEO approval, culture, comp, and detailed product ratings.
Open the full profile on Mandos to see employee & product reviews.
Leadership
Full leadership team
CEO, CxOs, VPs, and every exec with roles.
Open the full profile on Mandos to see full leadership team.
Competitors
Competitive landscape
The complete competitor set with overlap and positioning.
Open the full profile on Mandos to see competitive landscape.
News
Press & news coverage
The most recent mentions, announcements, and media coverage.
Open the full profile on Mandos to see press & news coverage.
Full profile
This public profile is a snapshot
The full Mandos profile of Green Hills Softwareadds funding rounds & investors, valuation estimates, headcount & hiring trends, technology stack, executive moves, and real-time monitoring.
FAQ
Frequently asked questions about Green Hills Software
When was Green Hills Software founded?▾
Green Hills Software was founded in 1982.
Where is Green Hills Software headquartered?▾
Green Hills Software is headquartered in Santa Barbara, United States.
Is Green Hills Software public or private?▾
Green Hills Software is a privately-held company.
How many employees does Green Hills Software have?▾
Green Hills Software has approximately 266 employees.
What does Green Hills Software do?▾
Green Hills Software, founded in 1982, develops real-time operating systems (RTOS), embedded development tools, optimizing compilers, and hypervisors for safety-critical and security-critical embedded systems. The company serves markets including aerospace and defense, automotive, industrial, medica…