Tera Term is described as '(Pro) is a free software terminal emulator (communication program) for MS-Windows. It supports VT100 emulation, telnet connection, serial port connection, and so on' and is a terminal emulator in the os & utilities category. There are more than 25 alternatives to Tera Term for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best Tera Term alternative is PuTTY, which is both free and Open Source. Other great apps like Tera Term are OpenSSH, Windows Terminal, KiTTY and Bitvise SSH Client.
VVTerm is a native SSH client for iPhone, iPad, and Mac. Connect to servers with passwords or SSH keys, browse remote files over SFTP, keep your hosts in sync with iCloud, and work comfortably across Apple devices with tmux, Mosh, and tunnel support.
Hong Kong SAR China
moserial is a clean, friendly gtk-based serial terminal for the GNOME desktop. It is primarily intended for technical users and hardware hackers who need to communicate with embedded systems, test equipment, and serial consoles.
United States
RXVT –our extended virtual terminal– is a terminal emulator for X11. It is a popular replacement for the standard ‘xterm’.
Serial Port Communication software ideal for COM communication. Multiplatform utility running on Windows, MacOS and Linux. It is completely free.
Hercules SETUP utility is a useful serial port terminal (RS-485 or RS-232), UDP/IP terminal and TCP/IP Client Server terminal. It was created for HW group internal use only, but today its includes many functions in one utility and its Freeware!
Czechia
EU
AccessPort is serial port monitoring tool for technicians, engineers and software developers designing or debugging serial port related projects.
Still using FTP? Truck hauls data 30x faster thanks to its modern rsync engine (included) which compresses, de-duplicates and encrypts – giving significantly higher performance and security, right from the first transfer.
Ghostly Bridge is a lightweight Windows tray app to manage servers and expose local apps instantly. Access UpCloud, DigitalOcean, and your own machines from one place.
AustriaEU
Simple alternative to ssh (<5% SLOCC) written from scratch in Go, with support for PQC KEMs (Post-Quantum Cryptography Key-Encapsulation Mechanisms).
RS-232 and RS-485 serial terminal and serial port monitor for macOS, Windows, Linux, with a Modbus RTU decoder and RS-485 sniffer, time-stamped logging, macros, triggers and ESP32, STM32, AVR firmware flashing, plus optional Lua scripting, charts, an AI assistant (BYOK) and an MCP server.
PolandEU
Ethiopia
South Korea
