What Weston Embedded Solutions does

Weston Embedded Solutions is a privately held Florida-based company, founded in 2020 by former Micrium and Silicon Labs engineers, that commercially develops and supports the Cesium RTOS family — the successor to Micrium's µC/OS real-time operating system. The product portfolio centers on two preemptive, portable ANSI C kernels (Cs/OS2 and Cs/OS3) with built-in MPU support and extensive runtime metrics, supplemented by a TCP/IP stack (Cs/NET with wolfSSL/TLS 1.3), USB device and host stacks (Cs/USBD, Cs/USBH), an embedded file system with optional journaling (Cs/FS), and an industrial Modbus stack (Cs/Modbus). A flagship differentiator is the Flexible Safety RTOS, a pre-certified µC/OS-II derivative validated by TÜV Rheinland and TÜV SÜd against ISO 26262 ASIL D (automotive), IEC 61508 SIL 3 (industrial), IEC 62304 Class C (medical), and EN 50128 SIL 4 (railway), targeting safety-critical embedded system designers. The codebase supports over 50 CPU architectures across ARM, RISC-V, MIPS, Power Architecture, and major MCU families from STMicroelectronics, NXP, Texas Instruments, Renesas, and Microchip.

The company monetizes the software through tiered one-time perpetual, royalty-free commercial licenses (Single Product through Global), annual recurring support plans (Cesium and Micrium Support), fixed-price self-paced training packages, and bespoke engineering consulting. Go-to-market combines direct enterprise field sales to mission-critical embedded customers, a global distributor channel across India, Korea/Japan, Southeast Asia, China, Israel, and Egypt, and technology partnerships with tool and silicon vendors including IAR, STMicroelectronics, NXP, AMD/Xilinx, Percepio, and wolfSSL. Named reference customers — Schneider Electric, Abbott, Zebra Technologies, Eli Lilly, Siemens, L3Harris, Boston Scientific, Becton Dickinson, Nikola, and the FAA — span industrial automation, medical devices, aerospace/defense, and automotive, reflecting the long historical footprint of the µC/OS codebase across thousands of deployed products.

Despite this product depth and enterprise footprint, Weston Embedded Solutions operates with a reported 1-10 person headcount and has not disclosed revenue, funding rounds, or external investment, positioning it as a specialized, founder-led niche vendor whose commercial scale relative to its installed-base reputation is not externally verifiable.

Name

Weston Embedded Solutions

Legal name

Weston Embedded Solutions LLC

Website

https://weston-embedded.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Weston Embedded Solutions, founded in 2020 by former Micrium and Silicon Labs engineers, commercially develops and supports the Cesium RTOS family and a Flexible Safety RTOS pre-certified to ISO 26262, IEC 61508, IEC 62304, and EN 50128, selling perpetual licenses, support plans, training, and consulting to safety-critical embedded system developers across aerospace, industrial, medical, automotive, and IoT.

Ownership category

akta.pro rank

Product category

Real-Time Operating Systems (RTOS)

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Embedded Software & Firmware Tools (Compilers, Debug, RTOS tooling) (HDAHAFAE)

akta.pro secondary industry

Instrumentation, Controls & Automation (DCS/PLC/SCADA, SIS, Metering) (EUAEAFAC)

Keywords

• Real-time operating systems
• Embedded software components
• Safety-certified RTOS
• Embedded TCP/IP stacks
• RTOS support services

Headquarters

HQ city

Weston

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Software Licensing: One-time perpetual license purchases for Cesium RTOS components. Multiple license tiers available including Single Product License, Product Line License, CPU Platform License, Site License, and Global License. Royalty-free for the life of the product.
2. Technical Support Plans: Yearly subscription support plans providing access to support engineers, product updates, example project assistance, and remote desk support. Includes both Cesium Support Plan and Micrium Support Plan options.
3. Training Services: Self-paced training packages for µC/OS and Cesium RTOS kernels. Single user package at $499 with optional 1-hour live Q&A session at $150. Custom on-site training also available.
4. Consulting Services: Custom engineering consulting including application development, port and driver development, board support package development, example projects, custom hardware support, and on-site assistance.

Pricing tiers

Go-to-market motion3 records

Distribution channels7 records

Marketing channels4 records

Core offering

Weston Embedded Solutions designs, develops, and commercially licenses Cesium RTOS — a real-time operating system derived from Micrium's µC/OS family — along with companion embedded software components (TCP/IP, USB, file system, Modbus stacks) and a pre-certified Flexible Safety RTOS. The company sells perpetual licenses, technical support subscriptions, consulting, and training to embedded system developers in aerospace, medical, industrial, automotive, and IoT markets.

Product overview

Weston Embedded Solutions offers a comprehensive embedded software portfolio centered on the Cesium RTOS, the next generation of Micrium's µC/OS family. The product line consists of two real-time kernels (Cs/OS2 and Cs/OS3) as the core platform, supplemented by communication stacks (Cs/NET with wolfSSL, Cs/USBH, Cs/USBD, Cs/Modbus), storage solutions (Cs/FS), and a pre-certified Flexible Safety RTOS variant for safety-critical applications. The company also provides complementary services including technical support plans, professional consulting, and RTOS training courses. All Cesium RTOS components are commercially licensed with perpetual, royalty-free deployment.

Differentiator

Problem solved

Functional benefit

Brands

• Cesium RTOS: The next generation of µC/OS software - a commercially licensed, strictly managed real-time operating system derived from Micrium's µC/OS products.
• Flexible Safety RTOS
• Micrium

Products and services

• Cesium RTOS The next generation of Micrium's µC/OS software — a commercially licensed, strictly managed real-time operating system featuring preemptive, highly portable, scalable kernels for microprocessors, microcontrollers, and DSPs across safety-critical and IoT embedded applications.
• Cs/OS2 Kernel Preemptive, highly portable, and scalable real-time kernel derived from µC/OS-II, providing 100% ANSI C source code and supporting 50+ CPU architectures for embedded systems.
• Cs/OS3 Kernel Preemptive, highly portable, and scalable real-time kernel derived from µC/OS-III, featuring unlimited tasks, built-in MPU support, round-robin scheduling, and extensive performance measurement metrics.
• Cs/NET TCP/IP Stack Compact, reliable, high-performance TCP/IP protocol stack providing dual IPv4 and IPv6 support, SSL/TLS socket option, and Ethernet/Wi-Fi/PHY controller support for embedded networked devices.
• Cs/FS Embedded File System Thread-safe embedded file system with optional journaling for fail-safe operation and FAT compatibility, designed for microprocessors, microcontrollers, and DSPs.
• Cs/USBD USB Device Stack Efficient USB device stack for embedded systems with class support including Audio, CDC-ACM, CDC-EEM, HID, MSC, and Vendor classes.
• Cs/USBH USB Host Stack Efficient USB host stack for embedded systems equipped with a USB host or OTG controller, including MSC, HID, CDC-ACM, and USB2Ser class drivers.
• Cs/Modbus Industrial Protocol Industrial serial communications protocol for connecting industrial electronic devices, supporting Modbus ASCII or RTU modes, scalable from 6K to 15K bytes with unlimited communication channels.
• Flexible Safety RTOS Pre-certified real-time operating system powered by Micrium's µC/OS-II kernel, delivered as a Cert-Kit for safety-critical applications requiring ISO 26262 (automotive), IEC 61508 (industrial), IEC 62304 (medical), or EN 50128 (railway) compliance.
• wolfSSL TLS Library SSL/TLS library with TLS 1.3 and DTLS 1.3 support, integrated with the Cesium Cs/NET stack and offering FIPS 140-2 validation for embedded security.
• RTOS Training Self-paced pre-packaged training course on µC/OS-III and Cesium Cs/OS3 kernels, with downloadable materials including 200+ slides of course content, lab lessons on STM NUCLEO-L152RE, and optional live Q&A.
• Embedded Software Consulting Specialized embedded software engineering consulting including application development, port and driver development, board support package development, example projects, custom hardware support, and on-site assistance.
• Technical Support Plan Yearly subscription-based US-based technical support providing access to embedded software experts via helpdesk, phone support, remote desk assistance, product updates, and example project help.
• Tracealyzer Visualization tool from Percepio for embedded software developers offering insights into real-time system behavior for performance optimization and troubleshooting on Cesium RTOS.
• Cesium RTOS Starter Packs Pre-configured development packages to help embedded developers quickly get started with Cesium RTOS on popular evaluation platforms.

Quantifiable outcome

• Certification time reduced through pre-certified Cert-Kits
• +2 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature7 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Embedded OfficecoreStrategic or Co-development PartnerTrusted partner in embedded software realm delivering high-reliability solutions for safety-critical applications. Focuses on safety systems for automotive, agricultural, industrial, aerospace, and medical sectors. Expertise spans RTOS solutions for driver assistance, camera platforms, power trains, autonomous vehicles, and medical devices.
• PercepiocoreTechnology or IntegrationLeading provider of visualization tools for embedded software developers. Their Tracealyzer product offers insights into real-time system behavior, helping developers optimize performance and troubleshoot issues in embedded applications. Ideal partner for Cesium RTOS users.
• wolfSSLcoreTechnology or IntegrationSpecializes in advanced lightweight and embedded security solutions focusing on speed, size, portability, and compliance standards. Offers dual licensing with open-source accessibility. Cesium Cs/NET includes wolfSSL TLS support with TLS 1.3 and DTLS 1.3 support.
• IARcoreTechnology or IntegrationWorld-leading embedded development tools provider. IAR Embedded Workbench supports over 15,000 devices from 200+ semiconductor partners. Fully supports Cesium RTOS with C/C++ compiler and debugger toolchain.
• STMicroelectronicscoreTechnology or IntegrationPart of ST Partner Program. Provides extensive ecosystem around ST's product portfolio. Cesium RTOS supports STM32 families including STM32U5 series with advanced power-savings based on ARM Cortex-M33 architecture.
• NXPcoreTechnology or IntegrationPart of NXP Partner Program. Renowned for secure connectivity in embedded, automotive, industrial, IoT, mobile, and communication infrastructure markets. 60+ years of experience with global presence in 30+ countries.
• Ruby Embedded TechnologiescoreChannel Partner/ Reseller/ DistributorIndian company specializing in embedded systems with fast time to market. Provides access to world-class development tools and software components with comprehensive instructions for efficient project completion.
• DioizcoreChannel Partner/ Reseller/ DistributorLeading company providing embedded software and engineering services since 2001. Over 20 years of experience helping customers enter markets and succeed quickly. Operates in Korea and Japan.
• Testech ElectronicscoreChannel Partner/ Reseller/ DistributorSingapore-based company offering solutions and products focused on embedded software and hardware for electronic applications. Portfolio includes programming interfaces, JTAG/ICE, single-board computers for professionals and enthusiasts.
• BMR (Beijing Microtec Research Software Technologies)coreChannel Partner/ Reseller/ DistributorFounded in 1995, focused on embedded solutions with 20+ years of experience. Leader in professional embedded software, operating systems, and hardware solutions for telecommunications, internet, consumer electronics, and industrial control markets.
• SightsysminorChannel Partner/ Reseller/ DistributorIsraeli company specializing in development and testing tools for embedded systems for over 20 years. Value-added provider offering high standard technical understanding and high-class customer support.
• Swift ActminorChannel Partner/ Reseller/ DistributorEgyptian embedded products and services company established in 2017. Team has experience in automotive and consumer electronics domains with System/Software Development Life-cycle activities in compliance with CMMI, Automotive SPICE, and ISO/TS 16949.

Scale indicators4 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• SYSGO: European vendor of PikeOS, a safety- and security-certified RTOS/hypervisor for automotive (ISO 26262), industrial (IEC 61508), aerospace (DO-178C), and railway (EN 50128) embedded applications.
• Green Hills Software: Vendor of the INTEGRITY RTOS, pre-certified to DO-178C, ISO 26262 ASIL D, and IEC 61508 SIL 3. Directly comparable safety-certified commercial RTOS targeting aerospace, automotive, industrial, and medical markets.
• BlackBerry QNX: Commercial RTOS (QNX Neutrino) with pre-certification to ISO 26262, IEC 61508, and IEC 62304. Competes head-to-head with Weston in automotive, medical, and industrial safety-critical embedded designs.
• Lynx Software Technologies: Developer of LynxOS and the LynxSecure separation kernel, with safety and security certifications for aerospace, defense, industrial, and medical embedded systems. Closely comparable niche commercial-RTOS vendor.
• Wind River Systems: Vendor of VxWorks, a commercial safety-certified RTOS widely used in aerospace, industrial, automotive, and medical embedded systems. Direct competitor to Cesium RTOS in the same safety-critical verticals and customer base.
• SEGGER Microcontroller: Vendor of embOS, a commercial RTOS for embedded microcontrollers used in medical, industrial, and consumer products. Comparable mid-sized commercial RTOS vendor with hardware-agnostic positioning.

Emerging players

• Zephyr Project: Linux Foundation-hosted open-source RTOS with broad silicon-vendor support (NXP, ST, Nordic, Intel). Major open-source competitor in IoT and industrial embedded segments where Cesium competes.
• PX5 RTOS: Newer commercial RTOS vendor positioning on POSIX-compliance, safety certification, and modern software-quality practices. Emerging competitor to Weston in safety-critical embedded designs.
• Amazon FreeRTOS / FreeRTOS Project: Widely adopted open-source RTOS for microcontrollers, now stewarded with significant Amazon backing. The primary open-source alternative to Cesium RTOS and a key competitive threat on price-sensitive designs.

Broad incumbents

• Microsoft (Azure RTOS / ThreadX): Microsoft now owns and distributes ThreadX (Azure RTOS) under a permissive license. A scaled, broad-incumbent competitor with deep engineering and ecosystem resources competing in the same embedded RTOS category.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/weston-embedded
• Xx.com/WestonEmbedded
• LinkedInlinkedin.com/company/weston-embedded

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Weston Embedded Solutions