I notice you're asking for an article about "is Eve NG free" — I assume you mean (Emulated Virtual Environment - Next Generation), the popular network emulator.
Below is a clear, informative article answering whether EVE-NG is free, what limitations exist, and which version suits different users. Introduction EVE-NG (Emulated Virtual Environment – Next Generation) is one of the most powerful network emulation platforms used by engineers, students, and certification candidates (CCIE, JNCIE, etc.). A common first question is: Is EVE-NG free? is eve ng free
