IntervalZero
- Company typePrivate
- Founded1995
- HeadquartersWaltham, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
IntervalZero firmographics
Firmographics- Name
- IntervalZero
- Legal name
- IntervalZero
- Website
- https://intervalzero.com
- Company type
- Private
- Founded year
- 1995
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
IntervalZero industry classification
Industry- Product category
- Real-Time Operating System Software
- NAICS
- Custom Computer Programming Services (541511), Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Services-Computer Programming Services (7371)
- akta.pro primary industry
- Embedded Software & Firmware Tools (Compilers, Debug, RTOS tooling) (HDAHAFAE)
- akta.pro secondary industry
- Industrial Automation Software (SCADA, HMI, MES, Historian) (IMAHAHAJ)
Keywords
Where IntervalZero is headquartered
LocationHeadquarters
- HQ city
- Waltham
- HQ country
- United States
- HQ region
- North America
Markets served
IntervalZero business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Software Licenses (Runtime): IntervalZero sells runtime licenses for MaxRT wRTOS™, RTX64, and other RTOS products. Multiple editions are available (Solo, Entry, Basic, Professional, Premium, Ultimate) with varying processor counts. Customers must purchase a runtime license for each system where the application is deployed.
- Software Development Kits (SDK): SDK licenses for application development using Visual Studio integration. The SDK provides headers, libraries, templates, debugging tools, and API documentation for building real-time applications.
- ETS Runtime Licenses: ETS is a discontinued product but runtime licenses can still be purchased for all versions. SDKs are no longer available for sale.
- Free Evaluations: Free trial evaluations are available for MaxRT wRTOS™ and RTX64, allowing customers to test the software before purchase. Evaluation requests are submitted through the website and result in emailed activation keys and download links.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Six runtime editions with 1-63 dedicated RTSS processors |
| Subscription | Annual | Optional purchasable features for MaxRT products |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
IntervalZero product offering
Product offeringCore offering
IntervalZero develops and licenses real-time operating system (RTOS) software that transforms standard Windows-based industrial PCs into deterministic hard real-time control systems. Its flagship products—MaxRT wRTOS, MaxRT vRTOS, MaxRT eRTOS, and RTX64—add a real-time subsystem (RTSS) alongside Windows or other GPOS to deliver sub-microsecond timer periods, SMP support across multi-core processors, and compatibility with industrial protocols such as EtherCAT, TSN, and OPC UA. The platform is licensed to OEMs and machine builders in automation, medical, automotive, defense, test & measurement, and digital audio.
Product overview
IntervalZero provides a platform-plus-modules architecture for PC-based real-time software for industrial control systems. The core MaxRT product family includes MaxRT wRTOS (the next generation of RTX64 for Windows real-time capabilities), MaxRT vRTOS (hypervisor-based solution supporting both Linux and Windows GPOS), and MaxRT eRTOS (standalone embedded RTOS for bare-metal deployments). The legacy RTX64 continues to be available as the proven RTOS platform extending Windows, while the older 32-bit RTX and discontinued ETS remain available for runtime licensing. Optional packages add Basic Networking (TCP/IP, TSN), Fieldbus (EtherCAT Master), and GigE Vision capabilities. The platform targets industrial automation, medical, automotive, defense, digital audio, and test & measurement industries, transforming standard industrial PCs into deterministic, secure, AI- and IoT-ready control systems.
Differentiator
Problem solved
Functional benefit
Products and services
- MaxRT wRTOS Next-generation real-time operating system for Windows-based deployments, succeeding RTX64. Provides hard real-time capabilities co-resident with Windows via a separate RTSS subsystem, with deterministic scheduling, SMP support, IST latencies under 10 microseconds, and timer periods down to 1 microsecond. Targeted at industrial OEMs, medical device makers, and defense contractors building PC-based control systems.
- MaxRT vRTOS Real-time hypervisor-based solution that includes IntervalZero's RTOS (MaxRT eRTOS) connecting to a general-purpose operating system such as Linux or Windows. Creates virtual machines for running real-time applications with flexibility and scalability, enhancing cybersecurity and deployment flexibility for industrial control systems.
- MaxRT eRTOS Standalone embedded real-time operating system that runs on bare metal without requiring Windows. Supports up to 64 processors and executes the same kernel code as RTX64, designed for headless and embedded industrial deployments.
- RTX64 Real-time software that transforms Windows into an RTOS platform for industrial control systems. Provides hard real-time capabilities on multi-core processors with SMP support, up to 63 dedicated RTSS processors on 64-processor systems, native 64-bit support, and full access to Windows libraries, drivers, and tools.
- RTX (32-bit) Original Win32-based Real-Time Extension for Windows, released in the 1990s as the first native Win32-based RTOS scheduler for Windows. Support ended March 2021; still available for legacy users though nearly all new projects have migrated to RTX64.
- ETS (Embedded Tool Suite) Win32 RTOS for x86 architecture. SDKs are no longer for sale, but runtime licenses can still be purchased for all versions. Designed for headless applications used in multimedia streaming, sub-micron scanning, vessel location systems, and RFID products.
Quantifiable outcome
- BOM cost reduction of 25-50% compared to proprietary real-time hardware solutions
- +3 more outcomes
Companies that use IntervalZero
Customer profileNamed customers7 records
Segments6 records
Ideal customer profiles6 records
IntervalZero technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration11 records
AI capability2 records
Feature6 records
IntervalZero partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core ecosystem, secondary, core and regional.
- Microsoftcore ecosystemMicrosoft is a key ecosystem partner. IntervalZero's RTX64 and MaxRT products are built on and deeply integrate with Microsoft Windows operating systems (Windows 10, Windows 11). The partnership includes Visual Studio development environment integration and support for Windows drivers, libraries, and tools.
- Intelcore ecosystemIntel provides processor technology that IntervalZero's RTOS platform runs on. Products support Intel processors, x86 architecture, and Intel technologies including Resource Director Technology (RDT), Cache Allocation Technology (CAT), and Memory Bandwidth Allocation (MBA) for cache and memory bus optimization.
- AMDsecondaryAMD processor support as part of the x86 architecture compatibility of IntervalZero's RTOS platform.
- Visual Studiocore ecosystemMicrosoft Visual Studio is the primary development environment for IntervalZero products. SDK supports Visual Studio 2022, 2019, 2017, and 2015, providing wizards, templates, and debugging capabilities for real-time application development.
- EtherCAT Technology Groupcore ecosystemEtherCAT is a key industrial Ethernet protocol supported by IntervalZero products. MaxRT Fieldbus provides EtherCAT MainDevice (Master) functionality with auto-discovery, auto-configuration, and support for CANopen over EtherCAT (CoE).
- KINGSTARcoreKINGSTAR Fieldbus powered by EtherCAT is based on IntervalZero RTX64. KINGSTAR simplifies EtherCAT network configuration and provides auto-discovery and auto-configuration features. Also offers KINGSTAR Motion for software-based motion control with EtherCAT support.
- United Electronic IndustriessecondaryUEI provides high-performance data acquisition hardware (PowerDAQ DSP-based boards) and Ethernet-based distributed automation systems (PowerDNA). Offers IntervalZero RTX drivers and supports ETS kernel.
- AxiomteksecondaryAxiomtek is a global designer and manufacturer of PC-based industrial computer products including industrial PCs, single board computers, fanless embedded systems, EtherCAT Master Controllers, and IoT gateway devices.
- ICOP TechnologysecondaryICOP is an embedded systems manufacturer specializing in Industrial PCs (IPC) and QEC EtherCAT automation solutions built on Vortex86 x86 SoC platform. Offers long-term product availability over 10 years.
- EmotassecondaryEmotas is an embedded software development company specializing in industrial communication including CAN, CANopen, and EtherCAT software development and consulting services.
- ESDsecondaryESD is a system integrator providing IntervalZero RTX drivers for CAN fieldbus cards with additional support for higher-layer protocols (CANopen, J1939) and EtherCAT implementation.
- Tokyo Electron DeviceregionalRegional reseller partner for Japan. Provides market expertise and first-level customer support for IntervalZero products in the Japanese market.
- MDS PacificregionalRegional reseller partner for Singapore and Malaysia. Provides sales and support services for IntervalZero products in Southeast Asia.
- MovensyssecondaryMovensys developed the World's First Software-based Motion Controller Platform 'WMX' that integrates Soft Motion technology and EtherCAT communication. Based on real-time operating system technology.
- MDSIsecondaryMDSI provides OpenCNC software CNC, the first production-proven, hardware-independent, unbundled software CNC on the market. Includes WinMotion soft motion for general motion control applications.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
IntervalZero competitors and assessment
Company assessmentDirect peers
- Wind River Systems: Wind River's VxWorks is the most widely deployed commercial RTOS in industrial, aerospace, and defense applications. It is the closest direct competitor to IntervalZero's RTX64/MaxRT in real-time operating systems for embedded and industrial control, though Wind River focuses on standalone RTOS rather than Windows-co-resident deployments.
- Green Hills Software: Green Hills provides the INTEGRITY and µ-velOSity RTOS products, with deep safety certification (DO-178C, IEC 61508 SIL-3) for automotive, medical, and industrial markets. It is a direct competitor in safety-critical real-time software, often winning in regulated verticals where IntervalZero also competes (defense, medical, industrial automation).
- BlackBerry QNX: QNX Neutrino is a real-time operating system widely used in automotive, medical, and industrial embedded systems. Comparable to IntervalZero's MaxRT family in target verticals (especially automotive electronics and ADAS) and in safety-critical real-time performance.
- Real-Time Innovations (RTI): RTI provides Connext DDS, a real-time data-distribution middleware widely used in industrial, medical, and defense systems. It is a comparable real-time infrastructure vendor for distributed industrial control applications, often used alongside or as an alternative to RTOS platforms like IntervalZero's.
Broad incumbents
- Microsoft (Azure RTOS / ThreadX): Microsoft's Azure RTOS (ThreadX) is a small-footprint RTOS that competes in embedded real-time markets. As a core ecosystem partner for IntervalZero, Microsoft is also a potential competitor — particularly for OEMs evaluating Azure-native real-time solutions. Represents the platform risk inherent to IntervalZero's Windows-centric architecture.
- Siemens: Siemens is both a customer of IntervalZero (SIMATIC WinAC uses RTX) and a broad incumbent in industrial automation software, with its own real-time control stacks across PLCs, SCADA, and industrial PCs. Its vertical reach in factory automation makes it a strategic competitor in the long term, even as it remains a customer today.
Emerging players
- Lynx Software Technologies: Lynx offers LynxOS and the LYNX MOSA.ic hypervisor for safety-critical and security-critical real-time applications. Comparable to IntervalZero's vRTOS hypervisor concept and to MaxRT's safety-critical positioning, particularly in defense and industrial markets.
- SYSGO: SYSGO's PikeOS is a real-time operating system and hypervisor certified for safety- and security-critical applications in automotive, aerospace, and industrial markets. It overlaps with IntervalZero's MaxRT vRTOS hypervisor offering in safety-critical and mixed-criticality use cases.
- ENEA: ENEA provides the OSE real-time operating system and related networking software for telecom, industrial, and automotive embedded systems. Comparable to IntervalZero in delivering real-time OS software for embedded industrial applications, with stronger telecom exposure.
- PX5 RTOS: PX5 RTOS is a vendor-neutral, advanced real-time operating system for embedded systems, supporting ARM and RISC-V architectures. It is an emerging competitor targeting industrial IoT and embedded control applications, representing the next wave of standards-based RTOS offerings that could compete with IntervalZero's MaxRT family.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
IntervalZero social profiles
Digital presenceIntervalZero compliance and trust
Trust signalCompliance3 records
IntervalZero financial estimates
Financial estimateRevenue estimate
Valuation estimate
IntervalZero leadership team
Management profileNumber of profiles
Profiles1 record
IntervalZero funding detail
Funding detailFunding overview
Funding rounds2 records
Investors7 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
IntervalZero M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about IntervalZero
What does IntervalZero do?
IntervalZero develops and licenses real-time operating system (RTOS) software that transforms standard Windows-based industrial PCs into deterministic hard real-time control systems. Its flagship products—MaxRT wRTOS, MaxRT vRTOS, MaxRT eRTOS, and RTX64—add a real-time subsystem (RTSS) alongside Windows or other GPOS to deliver sub-microsecond timer periods, SMP support across multi-core processors, and compatibility with industrial protocols such as EtherCAT, TSN, and OPC UA. The platform is licensed to OEMs and machine builders in automation, medical, automotive, defense, test & measurement, and digital audio.
Is IntervalZero a public or private company?
IntervalZero is a private company. It is classified as venture growth investor backed and is currently operating.
When was IntervalZero founded?
IntervalZero was founded in 1995. It employs 11 to 50 people.
Where is IntervalZero based?
IntervalZero is headquartered in Waltham, United States, in the North America region.
How does IntervalZero make money?
Four revenue lines are on record. Software Licenses (Runtime) is the primary driver. The others are software Development Kits (SDK), ETS Runtime Licenses and free Evaluations.
Who are IntervalZero's main competitors?
Direct peers on record are Wind River Systems, Green Hills Software, BlackBerry QNX and Real-Time Innovations (RTI). Broad incumbents are Microsoft (Azure RTOS / ThreadX) and Siemens. Emerging players are Lynx Software Technologies, SYSGO, ENEA and PX5 RTOS.
Does IntervalZero have an API?
No public API is recorded for IntervalZero.
What industry is IntervalZero in?
IntervalZero's product category is Real-Time Operating System Software. Its primary akta.pro industry code is HDAHAFAE, Embedded Software & Firmware Tools (Compilers, Debug, RTOS tooling), with a secondary code of IMAHAHAJ, Industrial Automation Software (SCADA, HMI, MES, Historian). Its NAICS code is 541511 and its SIC code is 3823.