Tera Term Pro - Version 2.3 Tera Term (Pro) is a free software terminal emulator (communication program)which supports Serial port connections, TCP/IP (telnet) connections, VT100 emulation, and selected VT200/300 emulation, TEK4010 emulation, File transfer protocols (Kermit, XMODEM, ZMODEM, B-PLUS, and Quick-VAN), Scripts using the "Tera Term Language".