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Kathará

Free#17 of 30 in Network Simulation Software

Kathará: A portable, programmable way to model multi-device network scenarios with containers. Ranked #17 of 30 in Network Simulation Software by our editors (7.6/10); pricing: Free plan; best for portable container-based network scenarios.

7.6/10Editor score

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At a glance

Editor score
7.6 / 10
Pricing
Free plan
Best for
Portable container-based network scenarios
Free plan
Yes
Paid from
Free
Facts checked
20 Sep 2026

Where it wins
- Free open-source emulation on Windows, macOS, and Linux
- Docker, Kubernetes, ready-to-use images, and virtual Layer-2 LANs
- CLI tools and Python APIs support repeatable scenario management
Where it doesn't
- Less suited to real-time or hardware-in-the-loop workflows
- Kubernetes-backed multi-server scenarios require Kubernetes infrastructure
- Scenario control is centered on CLI, configuration, and Python APIs

Our verdict on Kathará

Kathará is an open-source network emulation system for educators, researchers, developers, and network professionals. It models network devices as containers connected through virtual Layer-2 LANs, so teams can create configurable multi-device scenarios for interactive lessons, network sandboxes, and protocol development. Desktop deployments run through Docker on Windows, macOS, and Linux, while its API support enables programmatic control.

Its main strength is breadth within a container-based model. Ready-to-use network software images help populate scenarios, and command-line tools cover starting, configuring, connecting to, and managing devices. Virtual Layer-2 LAN interconnections allow multiple devices to be arranged into custom topologies. Docker supports local work, while Kubernetes extends deployment to multi-server scenarios. Python APIs add an automation path for users who want network scenarios managed from code rather than manually.

Kathará is a strong fit for portable labs, classroom exercises, research environments, and development sandboxes where repeatable containerized networks are more important than physical-device fidelity. Its open-source model also makes it suitable for organizations that want to inspect and adapt the platform. Teams focused on real-time emulation, hardware-in-the-loop testing, or workflows built around specialized physical equipment should choose a tool designed for those requirements instead. Kubernetes deployment can also introduce additional operational work compared with a local Docker setup, so the simpler desktop workflow is the clearer starting point for individual users and small scenario-based projects.

Your product? Our editors can test Kathará in depth and publish a review, labelled as paid · from $149/mo →

Kathará pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on kathara.org

Kathará fact sheet

Free plan	Yes
Paid from	Free
Simulation model	Emulation
Real-time emulation	Not verified
Hardware-in-the-loop	Not verified
Deployment options	Desktop
Documented node limit	Not verified
Automation API	Yes
Deployment	Desktop, Self-hosted
Platforms	Windows, macOS, Linux
Support	Email, Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations	2 integrations: Docker, Kubernetes
Pricing	Free plan
Website	kathara.org
Facts checked	20 Sep 2026

Kathará integrations

Kathará lists 2 integrations on its own site.

Docker
Kubernetes

Alternatives to Kathará

See all Kathará alternatives →

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Featured on iTechGuides

Kathará is listed in our Network Simulation Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update