# Green Hills Software Integrity > Integrity is a safety-critical real-time operating system (RTOS) developed by Green Hills Software. It is designed around a microkernel architecture that provides partitioning and memory protection to ensure system reliability and security for mission-critical applications. The OS is widely utilized in the aerospace, defense, automotive, and medical device industries. - URL: https://optimly.ai/brand/green-hills-software-integrity - Slug: green-hills-software-integrity - BAI Score: 82/100 - Archetype: Challenger - Category: Software - Last Analyzed: April 10, 2026 ## Competitors - BlackBerry QNX (https://optimly.ai/brand/blackberry-qnx) ## Also Referenced By - Commercial Rtos Vendors (https://optimly.ai/brand/commercial-rtos-vendors)