Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · IoT Operating Systems

QNX Neutrino RTOS vs Apache NuttX

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score QNX Neutrino RTOS #2 in IoT Operating Systems 9.1/10 Pricing on request · 30-day trial Free trial✓ 0 of 3 features Visit QNX
Apache NuttX #3 in IoT Operating Systems 9.0/10 Free plan Free plan✓ 0 of 3 features Visit Apache NuttX

QNX Neutrino RTOS leads on 0 checks, Apache NuttX on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreQNX Neutrino RTOS · 9.1/10
  • Free planonly Apache NuttX
  • Free trialonly QNX Neutrino RTOS

QNX Neutrino RTOS scores higher on our rubric for iot operating systems: 9.1 against 9.0 out of 10; our editors rank them #2 and #3.

Apache NuttX offers free plan; QNX Neutrino RTOS doesn't.

QNX Neutrino RTOS is the better fit for commercial embedded systems needing mature RTOS support. Apache NuttX is the better fit for open-source RTOS across diverse embedded hardware.

  • QNX Neutrino RTOS fits best

    Commercial embedded systems needing mature RTOS support

  • Apache NuttX fits best

    Open-source RTOS across diverse embedded hardware

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature QNX Neutrino RTOS 9.1/10 Visit ↗ Apache NuttX 9.0/10 Visit ↗
At a glance
Editor score 9.1 9.0
Ranking #2 in IoT Operating Systems #3 in IoT Operating Systems
Best for Commercial embedded systems needing mature RTOS support Open-source RTOS across diverse embedded hardware
Pricing model Paid Free
Starting price Pricing on request · 30-day trial Free plan
Free plan — ✓ (best)
Free trial 30 days —
Deployment Self-hosted Self-hosted
Support Docs, Community Docs, Community
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features QNX Neutrino RTOS 0/3 · Apache NuttX 0/3
Over-the-air updates Not checked yet Not checked yet
Fleet provisioning Not checked yet Not checked yet
Certificate management Not checked yet Not checked yet
Specs
Deployment model Not checked yet Not checked yet
Supported device OS Not checked yet Not checked yet
Protocol support Not checked yet Not checked yet
Device limit Not checked yet Not checked yet
Our review
Pros
  • Microkernel fault isolation with protected user-space components
  • POSIX APIs, multiprocessing and broad processor-family support
  • Networking, graphics, filesystems and restartable system services
  • Preemptive scheduling includes FIFO and round-robin options.
  • Configurable builds let developers select features for their target.
  • Documented support spans many processor architectures, SoCs, and boards.
Cons
  • Commercial licensing uses contact-sales pricing
  • No free plan; evaluation is limited to 30 days
  • Target support varies by product version and board support package
  • Designed for embedded systems, not general-purpose desktop computing.
  • Deployment is self-hosted on supported hardware or simulator targets.
  • Support channels are documentation and community.
Our verdict

QNX Neutrino RTOS is a commercial real-time operating system for embedded products such as medical instruments, networking equipment, telematics devices, industrial control systems and other mission-critical applications. Its microkernel…

Read the review →

Apache NuttX is an open-source real-time operating system for embedded developers building firmware and systems for microcontrollers and other supported hardware. Its small-footprint focus and configurable feature selection suit projects…

Read the review →
  1. QNX Neutrino RTOSIoT Operating Systems 9.1Pricing on request · 30-day trial
  2. Apache NuttXIoT Operating Systems 9.0Free plan

Strengths and trade-offs

  • QNX Neutrino RTOS — where it wins

    • Microkernel fault isolation with protected user-space components
    • POSIX APIs, multiprocessing and broad processor-family support
    • Networking, graphics, filesystems and restartable system services

    Where it doesn't

    • Commercial licensing uses contact-sales pricing
    • No free plan; evaluation is limited to 30 days
    • Target support varies by product version and board support package

  • Apache NuttX — where it wins

    • Preemptive scheduling includes FIFO and round-robin options.
    • Configurable builds let developers select features for their target.
    • Documented support spans many processor architectures, SoCs, and boards.

    Where it doesn't

    • Designed for embedded systems, not general-purpose desktop computing.
    • Deployment is self-hosted on supported hardware or simulator targets.
    • Support channels are documentation and community.
  • QNX Neutrino RTOS9.1/10 · Pricing on request · 30-day trial

    A mature commercial RTOS for mission-critical embedded products and multicore targets.

    Visit QNXFull verdict →
  • Apache NuttX9.0/10 · Free plan

    A free, configurable RTOS with broad documented hardware support and POSIX-oriented APIs.

    Visit Apache NuttXFull verdict →

More comparisons

All IoT operating systems comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update