GNS3 is a graphical network simulator that allows simulation of complex networks.
- Network Simulator
- Free • Open Source
- Mac
- Windows
- Linux

GNS3 is a graphical network simulator that allows simulation of complex networks.

Packet Tracer is an essential learning tool used in these Cisco Networking Academy courses: IT Essentials, CCNA Routing and Switching, CCNA Security, Intro to Internet of Things (IoT), and Mobility Fundamentals.

Cisco Packet Tracer mobile is a freely available network emulation stack centered around Cisco routers, firewalls, and switches. The mobile version is freely available without restrictions, while the desktop version is restricted to current students.

The new EVE-NG platform is ready for todays requirements. It allows enterprises, e-learning providers/centres, individuals and group collaborators to create virtual proof of concepts, solutions and training environments.

ns-3 is a discrete-event network simulator for Internet systems, targeted primarily for research and educational use. ns-3 is free, open-source software, licensed under the GNU GPLv2 license, and maintained by a worldwide community.
