ZOC is a popular[3][4] computer-based terminal emulator and Telnet software client for the Microsoft Windows and Apple Macintosh macOS operating systems that supports telnet, modem, SSH 1 and 2, ISDN, serial, TAPI, Rlogin and other means of communication.

Its terminal emulator supports Xterm emulation with full colors, meta-keys and local printing, VT102, VT220 and several types of ANSI as well as Wyse, TVI, TN3270, and Sun's CDE.

Price as of 2024[update] is about US$80, with a free evaluation period of 30 days.

ZOC can be downloaded for evaluation from EmTec or several shareware distribution sites.

[10] The following list describes supported communication methods, emulated terminals and other features.