Best Microsegmentation Software in 2026
Updated
In short: Calico Open Source is ranked #1 of 28 as of 4 October 2026, ahead of Istio and VMware Workstation Pro. The best-ranked option with a free plan is Istio. The lowest first paid tier on this page is Hopr at $35/mo.
Microsegmentation software helps define and enforce rules for communication between workloads. Compare workload coverage and policy granularity alongside identity-based rules, policy simulation, and Kubernetes enforcement to see which controls are available. Cloud environment and deployment model add context about where and how software can be used; check free-plan availability and paid starting prices as well. Calico Open Source, Istio, and Antrea are among the named options, alongside tools such as Cilium and ColorTokens Xshield. Consider the workloads and environments you need to protect, then use these criteria to compare the policy capabilities and deployment choices each entry describes.
28 microsegmentation software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
6 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Calico Open SourceWindows · Linux · Self-hosted | Two bars | — | 2 of 6 | Free | 6.4 | |
| 2 | IstioMac · Linux · Self-hosted | Two bars | — | 2 of 6 | Free | 6.4 | |
| 3 | VMware Workstation ProWindows · Linux · Self-hosted | Two bars | — | 2 of 6 | Free | 6.4 | |
| 4 | AntreaWindows · Linux · Self-hosted · API | Two bars | — | 2 of 6 | Free | 6.3 | |
| 5 | CiliumLinux · Self-hosted | Two bars | — | 1 of 6 | Free | 6.3 | |
| 6 | ColorTokens XshieldWeb · Windows · Mac · Linux · Self-hosted · API | Two bars | — | — | 4 of 6 | — | 5.6 |
| 7 | HashiCorp NomadWeb · Windows · Mac · Linux · Self-hosted · API | Two bars | — | — | 4 of 6 | — | 5.6 |
| 8 | Trellix Data Loss PreventionWeb · Windows · Mac · Self-hosted · API | Two bars | — | — | 3 of 6 | — | 5.6 |
| 9 | OVN-KubernetesWindows · Linux · Self-hosted · API | One bar | — | — | 2 of 6 | — | 5.5 |
| 10 | Zentera CoIP Access PlatformWindows · Mac · Linux · Self-hosted · API | Two bars | — | — | 3 of 6 | — | 5.5 |
| 11 | Aviatrix Zero Trust for WorkloadsWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 12 | Elisity MicrosegmentationWeb · Self-hosted · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 13 | Zscaler Private AccessWeb · Windows · Mac · Linux · Android · iPhone | Two bars | — | — | 6 of 6 | — | 5.4 |
| 14 | Tetrate Service BridgeWeb · Self-hosted · API | One bar | — | — | 1 of 6 | — | 5.3 |
| 15 | Zero Networks SegmentWeb · API | One bar | — | — | 1 of 6 | — | 5.3 |
| 16 | Hillstone Security ManagementNo platforms listed | One bar | — | — | 0 of 6 | — | 5.2 |
| 17 | SUSE Multi-Linux ManagerLinux | No signal | — | — | 1 of 6 | — | 5.2 |
| 18 | VMware vDefend Distributed FirewallWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 19 | Xage Critical Asset ProtectionWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 20 | Akamai Guardicore SegmentationSelf-hosted | No signal | — | — | 0 of 6 | — | 5.1 |
| 21 | Cyninges TITANNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 22 | HoprLinux · Self-hosted | One bar | — | 1 of 6 | $35/mo | 5.1 | |
| 23 | Calico EnterpriseWeb · Windows · Linux · Self-hosted | Two bars | — | — | 3 of 6 | — | 5.0 |
| 24 | VMware NSXWeb | No signal | — | — | 1 of 6 | — | 5.0 |
| 25 | Illumio SegmentationWindows · Linux | No signal | — | — | 2 of 6 | — | 4.9 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which microsegmentation software is ranked first on Freedom251?
Calico Open Source is ranked #1 of 28 with a score of 6.4. Istio is second and VMware Workstation Pro third.
How many of these have a free plan?
6 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Hopr has the lowest first paid tier we found: $35/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.