GNS3 — Network simulation (Open Source)

GNS3 is an open-source Network simulation solution from GNS3. Review its features and licensing on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is GNS3?

GNS3 is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under Network simulation and published by GNS3. Buyers typically evaluate GNS3 when they need a dependable Network simulation option and want to weigh the trade-offs between free, open-source and paid tools before committing.

• Category: Network simulation
• Brand: GNS3
• License: Open Source

Frequently asked questions

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