Cisco Packet Tracer vs Kathará

Cisco Packet Tracer is a free desktop network simulation and visualization tool for practicing networking, IoT and cybersecurity without physical lab hardware. Simulation Mode lets learners follow data as it travels through a network and analyze traffic. Physical Mode provides practice arranging a device rack and cables. The tool supports adding IoT devices, integrating Python code and practicing network automation. Tutored activities may provide hints, although Cisco says they are available for select courses. Packet Tracer runs on Windows, Linux and macOS, but not on smartphones or tablets. Learners can enroll in Cisco’s free Getting Started with Cisco Packet Tracer course to download the latest version. Installation opens a Packet Tracer Login window and may direct users to a browser for NetAcad sign-in. Some advanced functions, including multi-user Packet Tracer, require network access. On Ubuntu, Cisco’s instructions use the command line with elevated privileges. The Free plan costs nothing and requires course enrollment to download the latest version.

Kathará is a free, open-source system for emulating networks in interactive lessons, demos, production-network sandbox tests, and protocol development. It represents network devices with containers connected through virtual Layer-2 LANs, and scenarios can use Docker or Kubernetes as their virtualization backend. Built-in images include Quagga, FRRouting, Bind, P4, and OpenVSwitch; users can also supply their own container images. A Python package exposes APIs for custom code. Kathará supports Linux, macOS on Intel or Apple Silicon, and Windows 10 and 11. Debian and Ubuntu installations are available through apt, with precompiled packages for other listed distributions. Settings cover IPv6, terminal behavior, volume mounts, and remote Docker or Kubernetes connections. The software depends on Docker by default, and rootless Docker and Podman are unsupported. The project lists version 3.8.3 as covered by security patches. It is free, with a listed price of free.