NetSim vs NVIDIA DSX Air

NetSim is a browser-based network simulator for learning and practicing network configurations. It runs in the browser using WebAssembly and supports command-line practice for Cisco IOS, Huawei VRP and Aruba AOS-CX. NetSim Labs says it includes more than 35 labs from HCIA to HCIE level. The Free plan costs nothing, billed at $0 forever, and includes 10 basic labs, up to 15 devices per topology, AI Copilot with a bring-your-own-key setup, and local storage only. Pro costs $15 a month and adds 35+ advanced labs, unlimited devices, included AI Copilot, cloud sync across devices and priority support. Enterprise has custom pricing and lists SSO/SAML, an instructor dashboard, LMS integration through LTI, custom lab creation and dedicated support. Topology configurations and lab progress stay local unless cloud sync is enabled. The core engine is licensed under AGPL v3, with commercial licenses offered for organizations needing other terms.

NVIDIA DSX Air has no write-up on Specifiction yet; its figures are above.