IN THE FIELD GUIDE

ddci

ddci.com

Deos is a time and space partitioned, multicore real-time operating system (RTOS) verified to DO-178C/ED-12C Design Assurance Level A (DAL A) for avionics applications. It supports ARINC 653 APEX, Rate Monotonic Scheduling, POSIX APIs, and is certified and flying in tens of thousands of aircraft worldwide.

THE PRODUCT, BEYOND THE PITCH

Automatically researched · Not editorially reviewed · Sources checked Sep 13, 2026

Compare

A good fit for

Avionics developers requiring a certified, safety-critical RTOS with DAL A verification

Know the limitations

Not confirmed yet.

What you can do

Managing resources and hard partitioning avionics applications on x86, PowerPC, ARM, and MIPS processors for flight critical functions
Supporting avionics functions such as air data computers, flight instrumentation, engine management, flight controls, and traffic collision avoidance systems

Features

Time and space partitioning for safety and security
Multi-core support with SafeMC™ Technology

Integrations

Integration with third-party security software packages such as encryption, secure networking, and key management

Platforms & data export

Not confirmed yet.

THE COST FOR YOUR TEAM

Go beyond the starting price.

Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.

PeopleBillingCurrencyPrices are shown as published. No exchange rates are applied.Monthly usage per toolApplies to each tool’s own unit. Leave at 0 for subscription cost only.

Known monthly subtotal

$0.00/month

1 of 1 tools could not be priced with these inputs, so this is not the full cost.

Plan costs based on your requirements
Tool / plan	Monthly	Per year	What this assumes
ddci	No pricing recorded yet. Check the official site, or ask the owner to add it.

A practical workflow

Deos was built from the ground up with plans and procedures created to DO-178 guidance starting with its first line of code
Deos uses SafeMC™ Technology to enable safe multi-core scheduling and resource contention bounding

Based on the sources below. Editorial review does not imply hands-on product testing.

Alternatives to explore

Filter alternatives →

Candidates based on category and primary feature. Check feature and pricing differences before switching.

Plan a switch from ddci →

What changed

1 recorded change · latest 9/13/2026

Changes to the facts recorded here, not a live scan of every vendor update. Save this tool to follow updates in your account.

9/13/2026
Updated: best for, features, integrations, sources, summary, use cases, walkthrough
See recorded changes
bestFor
Before: []
After: ["Avionics developers requiring a certified, safety-critical RTOS with DAL A verification"]
features
Before: ["Time and space partitioning for safety and security isolation","Multi-core support with SafeMC technology for bounded resource contention and safe scheduling"]
After: ["Time and space partitioning for safety and security","Multi-core support with SafeMC™ Technology"]
integrations
Before: ["Integrated with third-party security software packages such as encryption, secure networking, and key management"]
After: ["Integration with third-party security software packages such as encryption, secure networking, and key management"]
sources
Before: [{"url":"https://www.ddci.com/","label":"DDC-I | Multicore Mission & Safety Critical RTOS Software"},{"url":"https://www.ddci.com/solutions/products/deos/","label":"Deos RTOS Software | Safety Critical Multicore RTOS | DAL A, DO-178C, FACE"}]
After: [{"url":"https://www.ddci.com/solutions/products/deos/","label":"Deos RTOS Software | Safety Critical Multicore RTOS | DAL A, DO-178C, FACE"}]
summary
Before: "Deos is a time and space partitioned, multicore real-time operating system (RTOS) verified to DO-178C/ED-12C Design Assurance Level A (DAL A) for avionics applications. It supports ARINC 653 APEX, Rate Monotonic Scheduling, POSIX APIs, and is certified and flying in tens of thousands of aircraft with millions of flight hours logged."
After: "Deos is a time and space partitioned, multicore real-time operating system (RTOS) verified to DO-178C/ED-12C Design Assurance Level A (DAL A) for avionics applications. It supports ARINC 653 APEX, Rate Monotonic Scheduling, POSIX APIs, and is certified and flying in tens of thousands of aircraft worldwide."
useCases
Before: ["Managing resources and hard partitioning avionics applications requiring bounded processing and high determinism","Supporting flight critical avionics functions such as air data computers, flight instrumentation, engine management, and traffic collision avoidance systems"]
After: ["Managing resources and hard partitioning avionics applications on x86, PowerPC, ARM, and MIPS processors for flight critical functions","Supporting avionics functions such as air data computers, flight instrumentation, engine management, flight controls, and traffic collision avoidance systems"]
walkthrough
Before: ["Deos provides a modular boot code and hardware abstraction layer to facilitate integration and security"]
After: ["Deos was built from the ground up with plans and procedures created to DO-178 guidance starting with its first line of code","Deos uses SafeMC™ Technology to enable safe multi-core scheduling and resource contention bounding"]