Top Free OT Secure Remote Access Software

BeyondTrust Privileged Remote Access

Privileged Remote Access (PRA) eliminates the risks inherent in remote access solutions dependent on VPNs and RDP. PRA delivers seamless, just-in-time access through encrypted tunnels to IT and OT systems. Each connection is brokered by the BeyondTrust platform, ensuring a zero-trust approach that grants the least amount of privilege necessary. By providing least-privileged access on demand, you can streamline operations, while reducing your attack surface and administrative overhead. Get a Free Trial: https://www.beyondtrust.com/privileged-remote-access-trial Watch a Demo: https://www.beyondtrust.com/demos Learn more about BeyondTrust Privileged Remote Access: https://www.beyondtrust.com/products/privileged-remote-access

Average Rating: 4.6/5.0

Total Reviews: 69

RealVNC

RealVNC® Connect is the secure remote access solution from RealVNC, the inventors of VNC technology. RealVNC Connect lets you connect to a remote device anywhere in the world to view its desktop in real-time and take control as though sitting in front of it. From enabling remote working, to managing vital systems remotely, to providing IT support for your organization, RealVNC® Connect has the features you need to stay connected. Trusted by IT teams at leading businesses around the world, RealVNC Connect offers affordability, ease of use, and unrivalled security for remote access. For information on our security credentials, visit: https://www.realvnc.com/en/connect/security/

Average Rating: 4.7/5.0

Total Reviews: 419

Dispel

Dispel provides secure remote access to industrial control systems, also known as OT infrastructure. Dispel's platform offers unified identity & access management (IAM); logging and session recording; disposable systems to protect from ransomware and malware; Moving Target Defense-based SD-WAN connections to facilities; and access control list (ACL) enforcement. Together, the Dispel remote access platform gives utilities, manufacturing, and other OT operators control over third-party and internal employee access to their systems.

Average Rating: 4.8/5.0

Total Reviews: 12

MSP360 Connect

MSP360 Connect is a remote desktop solution designed for MSPs, IT professionals, businesses, and individuals. Whether providing remote support, managing IT infrastructure, or accessing personal devices, MSP360 Connect delivers fast, stable, and secure remote access. With features like unattended access, strong encryption, and seamless connectivity, it ensures efficient troubleshooting, remote maintenance, and collaboration—eliminating the need for on-site visits.

Average Rating: 4.2/5.0

Total Reviews: 51

BlastWave

BlastShield's Zero Trust protection is uniquely differentiated for OT networks because it addresses the inherent challenges of these environments beyond traditional IT-centric approaches. Unlike IT networks, OT environments often feature legacy systems, unpatchable devices, and real-time operational constraints. BlastShield's zero trust model acknowledges these complexities by prioritizing identity and context over traditional perimeter-based security. It's granular, identity-driven access controls extend to individual OT devices and protocols, ensuring that only authorized users and processes can access critical assets, regardless of their location within the network. This is crucial in OT, where lateral movement from compromised devices can have catastrophic consequences. Furthermore, BlastShield understands the sensitivity of OT protocols, providing policy enforcement without disrupting operations. Its ability to integrate with existing OT systems and adapt to their unique communication patterns sets it apart. By combining robust authentication, continuous authorization, and contextual awareness, BlastShield delivers a tailored zero trust solution that protects OT networks from internal and external threats, ensuring operational safety and resilience. This approach moves beyond simple access control and into understanding how OT networks function and the risks they face.

IXON Cloud

Meet IXON Cloud: the industrial IoT platform that grows with you. IXON Cloud is a complete IoT solution, from connectivity to cloud, that brings your machines, people and services together. Connect your machines to IXON Cloud to benefit instantly from optimised remote support with Remote Access Cloud. Or work on your service ambitions and increase revenue with data-driven business models with Service Lifecycle Cloud. The IXON Cloud solution is scalable and open to integrate with third party apps, so you can customise it to your own unique situation. Curious about what IXON Cloud can offer you? Check our website: www.ixon.cloud

Average Rating: 4.5/5.0

Total Reviews: 1

Pragma Fortress SSH Server for Windows

Pragma Fortress SSH Server for Windows is an enterprise-grade Secure Shell (SSH) server that delivers FIPS-compliant remote access, secure system administration, and encrypted file transfer for mission-critical environments. Built specifically for Microsoft Windows platforms, it includes integrated SFTP and SCP services and runs as a native Windows service, leveraging the operating system’s internal security and authentication mechanisms for centralized access control and policy enforcement. The solution enables administrators and applications to securely manage servers, automate tasks through remote command execution, and protect sensitive data in transit across distributed networks. FIPS 140-2 Compliant now and soon will be FIPS 140-3 Compliant- Uses Microsoft NIST certificate CMVP#4536 and CMVP#4825 and soon will be FIPS 140-3 Compliant when Microsoft crypto library achieves FIPS 140-3 certification. Pragma Crypto library is based on Microsoft Cryptographic Primitives Library which attained FIPS 140-2 Certification (NIST certificate #4536, #4825). CMVP #4825 is used for Windows 11 and other new Windows versions. Key Features : - Native Windows architecture – Runs as a true Windows service with full support for local and Active Directory authentication - Integrated SFTP and SCP for secure, encrypted file transfer - FIPS-validated cryptography for federal and regulated enterprise deployments - Multifactor authentication including CAC/PIV smart cards and X.509 certificates - RFC 6187 compliant PKI authentication for advanced identity environments - Granular access controls mapped to Windows users, groups, and GPO policies - Secure remote command execution for automation and orchestration - Event logging and auditing through native Windows logging for SIEM integration - High-performance, scalable design for data center and high-volume transfer workloads

Secomea

Secomea is a Secure Remote Access (SRA) solution purpose-built for industrial networks and OT equipment. Over 8,000 customers around the world use it every day across thousands of sites to manage remote access to their operational environments and prevent downtime. 🌍 Founded in 2008, Secomea has been serving manufacturers and machine builders for over 15 years. Besides our HQ in Copenhagen and our offices in the US, China, and Japan - we have an international network of 70+ partner distributors, giving us a global reach to offer you assistance anywhere your sites are located in the world while still providing local support and close customer relationships. 🌐 Our solution seamlessly connects to any OT equipment, empowering organizations to secure cyber-physical systems. You can manage your technicians’ access to let them intervene in any of your OT sites right away, wherever they are. So, you eliminate travel expenses, minimize response time, reduce security risks, and prevent downtime. 🔧 Secomea simplifies secure remote access and gives you global oversight while maintaining local control. The implementation only takes one day per site. With an interface that is very easy and intuitive to use even for non-IT people, we help you defend your factory floor. 🛡️

Average Rating: 4.2/5.0

Total Reviews: 3

SurePassID Authentication Server

SurePassID is a leading provider of authentication solutions for demanding critical infrastructure environments, including on-premise, air-gapped, and hybrid systems. SurePassID seamlessly secures users and applications across Information Technology (IT) and Operational Technology (OT) while maintaining physical/logical separation and meeting the latest Zero Trust mandates. SurePassID offers 6 Nines (99.9999%) of availability; passwordless, phishing-resistant multi-factor authentication (MFA); SAML 2.0 IdP on-prem or in the cloud; FIPS 140 and AES 256 cryptography; unmatched technical support; and a wealth of other features. To find out more, please visit www.surepassid.com.