z/Scope is a multi-protocol, multi-host terminal emulator that provides access to multiple terminal-based applications in a way that is familiar to every user, using a modern tabbed interface.

Flynet Viewer Terminal Emulator is described as 'Zero client, web based solution for accessing green screen applications on Mainframe, Unix, IBM i (AS400), VAX, VMS and may more' and is a terminal emulator in the os & utilities category. There are five alternatives to Flynet Viewer Terminal Emulator, not only websites but also apps for Windows, Linux and Mac. The best Flynet Viewer Terminal Emulator alternative is z/Scope. It's not free, so if you're looking for a free alternative, you could try x3270. Other great sites and apps similar to Flynet Viewer Terminal Emulator are Vista tn3270, Microfocus Extra! and Inventu Viewer+.
z/Scope is a multi-protocol, multi-host terminal emulator that provides access to multiple terminal-based applications in a way that is familiar to every user, using a modern tabbed interface.

x3270 is an IBM 3270 terminal emulator for the X Window System and Windows. It runs on most Unix-like operating systems -- e.g., Linux, Mac OS X, Solaris and Cygwin. It also runs natively on Windows.
Vista tn3270 is a 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.

Extra! is a Windows-based terminal emulator that connects users to IBM, UNIX, and Linux hosts. Extra! provides features you need to get the most from your mainframe applications.

The fastest, most functional Pure Web Terminal Emulator available with new features and functionality made available to customers regularly.