Best Network Operating Systems (NOS) with a Free Trial of 2026

As a pioneer in open-source networking, VyOS Networks empowers enterprises with automated, secure, and scalable connectivity across cloud, edge, and physical hardware. Engineered for ultimate flexibility, our enterprise-class platform drives seamless automation and robust performance without the trap of proprietary vendor lock-in. We are dedicated to returning infrastructure ownership back to you through completely neutral and transparent solutions. VyOS Universal Router provides a single, consistent networking layer across all of them: • Same operating system • Same configuration model • Same CLI and APIs • Same automation workflows • Same operational model across tenants and regions Your network, your rules.

NVIDIA presents pure SONiC, an open-source, community-driven, Linux-based network operating system that has been fortified in the data centers of major cloud service providers. By utilizing pure SONiC, enterprises can eliminate distribution constraints and fully leverage the advantages of open networking, complemented by NVIDIA's extensive expertise, training, documentation, professional services, and support to ensure successful implementation. Additionally, NVIDIA offers comprehensive support for Free Range Routing (FRR), SONiC, Switch Abstraction Interface (SAI), systems, and application-specific integrated circuits (ASIC) all consolidated in one platform. Unlike traditional distributions, SONiC allows organizations to avoid dependency on a single vendor for updates, bug resolutions, or security enhancements. With SONiC, businesses can streamline management processes and utilize existing management tools throughout their data center operations, enhancing overall efficiency. This flexibility ultimately positions SONiC as a valuable solution for those seeking robust network management capabilities.

OcNOS is a powerful and flexible operating system designed for use across the complete range of Open Compute platforms offered by top network device manufacturers. This design ensures uniform operations, enhances workflow automation, and maintains high availability, all while leading to a notable decrease in operational costs. Drawing inspiration from the well-established ZebOS product line, OcNOS boasts a comprehensive feature set and durability that have been proven in countless customer networks over the years. It includes an industry-standard Command Line Interface (CLI), supports all common Management Information Bases (MIBs), and integrates with standard operational and management tools. Furthermore, the system features a centralized management and provisioning framework that supports transaction-based configurations and device feature modeling. This management layer is equipped with capabilities for Netconf and REST APIs, in addition to the ability to generate custom CLI commands. As a result, network administrators can easily configure, oversee, and manage an OcNOS system through a dedicated Network Management System, ensuring optimal performance and efficiency. In essence, OcNOS represents a significant advancement in network operating systems, combining innovation with reliability.

Cisco NX-OS is a powerful operating system designed for data centers, focusing on improving network agility, scalability, and security. Its adaptable architecture accommodates advanced technologies like Virtual Extensible LAN (VXLAN) paired with Ethernet VPN (EVPN), which facilitates effortless scalability and effective traffic handling. The platform streamlines network management and operations through rapid provisioning and comprehensive oversight, supported by the Cisco Nexus Dashboard Fabric Controller (NDFC) and open APIs that promote automation. Enhanced security measures include end-to-end network segmentation and robust encryption protocols such as MACsec and RADsec, which safeguard data integrity and privacy. Furthermore, Cisco NX-OS is fine-tuned for high-performance applications, including artificial intelligence and machine learning, boasting non-blocking networks and ultra-low latency switches designed to manage intensive workloads efficiently. This makes it an ideal choice for organizations seeking to optimize their data center operations while maintaining top-tier security and performance.