Best Free Data Center Networking Solutions

ManageEngine OpManager is a robust data center networking solution that provides comprehensive visibility and control over the entire data center infrastructure. It enables real-time monitoring of critical components such as switches, routers, firewalls, load balancers, servers, and storage devices, ensuring optimal performance and uptime. With capabilities like automated network discovery, topology mapping, fault detection, bandwidth analysis, and intelligent alerting, OpManager helps data center teams proactively identify issues, prevent downtime, and optimize resource utilization. Its scalable architecture and support for multi-vendor environments make it an ideal choice for managing complex, high-density data center networks efficiently.

Faddom offers real-time, agentless application dependency mapping to give IT teams instant, risk-free visibility into hybrid environments. No credentials, no software installs, and no firewall changes. Faddom maps servers, applications, cloud resources, and traffic flows within an hour of deployment. This always-live mapping supports security audits, change impact analysis, cloud migration, IT documentation, and incident response. Faddom provides continuous infrastructure clarity without disruption, enabling better planning, control, and compliance. Trusted by organizations across industries, Faddom is built for speed, security, and simplicity. Deploy fast. Discover more. Stay in control.

ngrok is the programmable network edge that adds connectivity, security, and observability to your apps with no code changes. Bring security, scalability, and observability to your apps with ngrok's network edge. Put localhost on the internet securely. Introspect and replay requests for a tight feedback loop. Connect into customer networks. No time wasted on firewall rules, VPNs, or change requests. ngrok is the fastest way to put your app on the internet. We run a globally distributed reverse proxy fronting your web services running in any cloud or behind any firewall.

Calico is an open-source networking and network security solution for containers, virtual machines, and native host-based workloads. Calico supports a broad range of platforms including Kubernetes, OpenShift, Mirantis Kubernetes Engine (MKE), OpenStack, and bare metal services. Whether you opt to use Calico's eBPF data plane or Linux’s standard networking pipeline, Calico delivers blazing-fast performance with true cloud-native scalability. Calico provides developers and cluster operators with a consistent experience and set of capabilities whether running in the public cloud or on-prem, on a single node, or across a multi-thousand-node cluster. Calico gives you a choice of data planes, including a pure Linux eBPF data plane, a standard Linux networking data plane, and a Windows HNS data plane. Whether you prefer the cutting-edge features of eBPF or the familiarity of the standard primitives that existing system administrators already know, Calico has you covered.

A multi-cloud service networking platform to connect and secure services across any runtime platform and public or private cloud. Real-time health and location information of all services. Progressive delivery and zero trust security with less overhead. Receive peace of mind that all HCP connections are secured out of the box. Gain insight into service health and performance metrics with built-in visualization directly in the Consul UI or by exporting metrics to a third-party solution. Many modern applications have migrated towards decentralized architectures as opposed to traditional monolithic architectures. This is especially true with microservices. Since applications are composed of many inter-dependent services, there's a need to have a topological view of the services and their dependencies. Furthermore, there is a desire to have insight into health and performance metrics for the different services.