Vista tn3270 is described as 'Windows program designed to emulate IBM 3270 terminals connected to a host via IP link. If you are looking for an emulator created with mainframe programmers in mind, then give this one a try' and is a Terminal Emulator in the OS & Utilities category. There are eight alternatives to Vista tn3270 for Windows, Mac, Online / Web-based and Linux. The best alternative is ZOC. It's not free, so if you're looking for a free alternative, you could try x3270. Other great apps like Vista tn3270 are z/Scope (Paid), Attachmate Reflection (Paid), Microfocus Extra! (Paid) and Powerterm (Paid).
Inventu Enables Powerful Host Access Starting With Pure Web Inventu Viewer+ Terminal Emulation Which Enables Our Open Web ScreenAPI for Rapid Publishing and Integration Using RestFul JSON For 3270, 5250 or VTxxx, ANSI, Wyse, ViewPoint and XTERM Screen-based Applications.