Best Free Network Virtualization Software of 2025

ZeroTier transforms networking by creating a secure overlay that treats all your devices as though they’re on the same local network. With a setup that takes just minutes, our software-defined solution makes managing even the most complex networks effortless, no matter where your devices are located. Key benefits of ZeroTier include: Enabling private global networks tailored for IoT applications. Streamlining connections across multiple sites using software-defined networking. Replacing traditional VPNs to securely connect employees to essential systems. Choose ZeroTier for fast, flexible, and secure networking that meets the demands of today’s global businesses.

Azure Network Function Manager delivers a standardized management interface for pre-validated mobile network functions, facilitating the implementation of private LTE and 5G solutions. This service also supports a smooth cloud-to-edge integration for Azure Marketplace network functions, including SD-WAN. You can deploy secure private 5G and LTE mobile networks on-site, with the ability to quickly set them up from various mobile packet core network function partners directly through the Azure portal. These networks are designed to provide extremely low latency, making them ideal for real-time edge applications, such as augmented reality, virtual reality, and industrial robotics. Managing and deploying SD-WAN and VPN solutions at the edge is made simple, thanks to a diverse ecosystem of partners. Additionally, for a comprehensive hybrid experience, Azure Marketplace allows you to select from a list of pre-validated network functions, ensuring compatibility with the network functions utilized in Azure and Azure Virtual WAN, which further enhances the operational reliability with Azure Stack Edge. This integration not only streamlines deployment but also enhances the performance of critical applications in various industries.