Best IoT Operating Systems in 2026
Updated
In short: Particle Device OS is ranked #1 of 14 as of 4 October 2026, ahead of VxWorks and Micrium OS. The lowest first paid tier on this page is Particle Device OS at $299/mo.
IoT operating systems underpin software running on connected devices, and the right fit depends on how you plan to deploy and manage a fleet. This best-of ranking opens with Particle Device OS, VxWorks, and Micrium OS. Compare deployment models, supported device operating systems, and protocol support against the environments you need to support. Fleet provisioning and over-the-air updates matter when considering how devices are set up and maintained, while certificate management and device limits help clarify operational scope. Review free-plan availability and starting paid prices alongside those capabilities to understand which options match your requirements.
14 IoT operating systems ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | App | Score | From | Free plan | Paid from | Deployment model | Supported device OS | Over-the-air updates | Fleet provisioning | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Particle Device OS | 6.4 | $299/mo | Yes | 299 /mo | hybrid | Particle Device OS on Particle devices | Yes | — | View |
| 2 | VxWorks | 6.0 | — | Yes | — | — | — | — | — | View |
| 3 | Micrium OS | 5.9 | — | Yes | — | edge | Micrium OS; runs on Silicon Labs EFR32 and EFM32 devices | — | — | View |
| 4 | RT-Thread | 5.9 | — | Yes | — | edge | — | Yes | — | View |
| 5 | TencentOS Tiny | 5.9 | — | Yes | — | edge | — | Yes | — | View |
| 6 |  Apache NuttX | 5.6 | — | Yes | — | — | — | — | — | View |
| 7 |  FreeRTOS | 5.6 | — | Yes | — | — | — | — | — | View |
| 8 | Azure Sphere OS | 5.4 | — | No | — | hybrid | Azure Sphere OS (custom Linux-based OS) | Yes | Yes | View |
| 9 | Contiki-NG | 5.3 | — | — | — | edge | ARM Cortex-M3/M4; TI MSP430; TI CC13xx/CC26xx; Nordic nRF5340/nRF52840; Silicon Labs Gecko; native/Cooja | — | — | View |
| 10 | PikeOS | 5.3 | — | No | — | edge | Linux, Android, Windows, ELinOS, POSIX, ARINC 653, PikeOS Native | Yes | — | View |
| 11 | Apache Mynewt | 5.2 | — | — | — | edge | Apache Mynewt | — | — | View |
| 12 |  OpenWrt | 5.2 | — | — | — | hybrid | — | — | — | View |
| 13 | PX5 RTOS | 5.0 | — | — | — | edge | — | — | — | View |
| 14 |  QNX Neutrino RTOS | 4.7 | — | No | — | — | — | — | — | View |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which IoT operating system is ranked first on Samsung Mobile US Press?
Particle Device OS is ranked #1 of 14 with a score of 6.4. VxWorks is second and Micrium OS third.
How many of these have a free plan?
1 of the 14 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Particle Device OS has the lowest first paid tier we found: $299/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.