Best Operational Technology (OT) Security Tools Companies

Microsoft focuses on software, hardware, and services. The company offers products in business productivity software, cloud computing services, personal computing devices, and gaming consoles. Microsoft serves sectors such as business, education, healthcare, and gaming. It was founded in 1975 and is based in Redmond, Washington.

Cisco offers artificial intelligence (AI) infrastructure, secure networking, and software solutions within the technology sector. It offers products designed to connect and protect organizations, focusing on connectivity, network automation, and cybersecurity. It was founded in 1984 and is based in San Jose, California.

IBM operates as a global technology company involved in artificial intelligence (AI), automation, and hybrid cloud solutions across various sectors. The company provides services that include AI-driven business solutions, enterprise automation tools, and management of hybrid cloud environments. IBM provides services in sectors such as cybersecurity, data governance, and quantum computing research. IBM was formerly known as Computing-Tabulating-Recording Company. It was founded in 1911 and is based in Armonk, New York.

Armis is a cybersecurity company that focuses on cyber exposure management and security across various sectors. The company offers a platform that aims to protect an organization's attack surface and manage cyber risk in real-time, using asset discovery, threat detection, and vulnerability management. Armis serves sectors such as manufacturing, healthcare, government, and critical infrastructure, among others. It was founded in 2015 and is based in San Francisco, California.

Claroty focuses on cyber-physical systems (CPS) protection within the cybersecurity field. The company's platform includes tools for asset inventory, exposure management, network protection, secure access, and threat detection, aimed at protecting critical infrastructure across different sectors. Claroty serves industries like healthcare, industrial control, commercial buildings, and the public sector, addressing their specific challenges. It was founded in 2015 and is based in New York, New York.

Dragos offers industrial cybersecurity for operational technology (OT) environments. It offers a platform to provide visibility into industrial control systems (ICS) and OT assets, manage vulnerabilities, and detect and respond to threats. It serves industries, including electric, oil and gas, manufacturing, and more, with solutions tailored to each sector's unique cybersecurity challenges. It was formerly known as Dragos Security Services. It was founded in 2016 and is based in Hanover, Maryland.

ForeScout is a cybersecurity company that focuses on providing automated cybersecurity solutions across various sectors. The company offers a platform that continuously identifies, protects, and ensures compliance for all managed and unmanaged cyber assets, including information technology (IT), the internet of things (IoT), the internet of medical things (IoMT), and operational technology (OT), without favoring specific vendors. ForeScout's services cater to a range of industries, including financial services, government, healthcare, energy, manufacturing, and education. It was founded in 2000 and is based in San Jose, California.

Fortinet provides cybersecurity solutions and services in the technology sector. It offers a range of products that secure networks, applications, and data, including network security, endpoint security, and cloud security solutions. Its products help to protect against cyber threats and ensure secure access to digital resources. It was founded in 2000 and is based in Sunnyvale, California.

Honeywell operates in industrial sectors including aerospace, automation, and energy. The company provides products and services such as aerospace systems, industrial automation solutions, building management systems, and energy services. Honeywell serves sectors like aerospace, commercial buildings, data centers, defense, healthcare, life sciences, manufacturing, oil & gas, retail, utilities, and warehouse & logistics. Honeywell was formerly known as Alliedsignal. It was founded in 1885 and is based in Charlotte, North Carolina. Honeywell operates as a subsidiary of Allied Signal.

Nozomi Networks focuses on operational technology cybersecurity, protecting critical infrastructure across various industries. The company's offerings include network and endpoint visibility, threat detection, and artificial intelligence (AI)-driven insights. Nozomi Networks serves sectors such as transportation, utilities, healthcare, and manufacturing, providing solutions that meet industry cybersecurity standards. It was founded in 2013 and is based in San Francisco, California. In September 2025, Nozomi Networks was acquired by Mitsubishi Electric at a valuation of $953.39M.

Ordr focuses on asset inventory management and reducing the attack surface within the cybersecurity sector. The company offers a platform that provides real-time threat protection, vulnerability prioritization, and automated security policy enforcement for IT, IoT, IoMT, and OT devices, as well as cloud and SaaS workloads. Ordr's solutions cater to various industries, including healthcare, manufacturing, financial services, and more. Ordr was formerly known as CloudPost Networks. It was founded in 2015 and is based in Santa Clara, California.

Palo Alto Networks focuses on protecting digital environments through technology. The company offers various security products and services, including network security, cloud security, and AI-driven security operations. Palo Alto Networks serves sectors including public sector, financial services, manufacturing, healthcare, and small to medium businesses. It was founded in 2005 and is based in Santa Clara, California.

Shift5 is an observability platform specializing in onboard operational technology (OT) across defense, aviation, and rail sectors. The company offers a suite of services, including predictive maintenance, cybersecurity, compliance automation, and Global Positioning System (GPS) integrity solutions, focusing on the security and reliability of critical fleets. Shift5 primarily serves sectors that require data-driven decision-making and operational intelligence for fleet management. It was founded in 2019 and is based in Arlington, Virginia.

Tenable (NASDAQ: TENB) focuses on cybersecurity and exposure management within the technology sector. The company offers an AI-powered exposure management platform that provides visibility, insights, and actions to address cybersecurity risks across IT infrastructure, cloud environments, and critical infrastructure. Tenable's platform and solutions are designed to help organizations identify and prioritize vulnerabilities, manage cloud security, secure operational technology, and manage identity exposures. It was founded in 2002 and is based in Columbia, Maryland.

Trend Micro is a global cybersecurity leader that provides advanced protection and threat intelligence across clouds, networks, devices, and endpoints. The company offers a comprehensive cybersecurity platform that includes a range of advanced threat defense techniques optimized for major cloud environments and central visibility for enhanced detection and response capabilities. Trend Micro serves a diverse set of industries with solutions tailored to their specific security needs, including healthcare, manufacturing, oil & gas, and more. It was founded in 1988 and is based in Tokyo, Japan.