Tera Term
Tera Term is the terminal emulator for Microsoft Windows, that supports serial port, telnet and SSH connections. Among many other features it also has built-in Macro scripting language. Tera Term is often used to automate tasks related to remote connections initiated from PC. Tera Term is a free software terminal emulator (communication program) which supports serial port connections, TCP/IP (telnet, SSH1, SSH2) connections, log replaying, named pipe connection, and IPv6 communication. It also supports VT100 emulation and selected VT200/300 emulation, TEK4010 emulation, file transfer protocols (Kermit, XMODEM, YMODEM, ZMODEM, B-PLUS and Quick-VAN), and scripts using the "Tera Term Language". Supports Japanese, English, Russian, Korean and UTF-8 character sets, UTF-8 character encoding, and message catalog (in Japanese, English, German, French, Russian, Korean and Chinese).
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AbsoluteTelnet SSH Client
AbsoluteTelnet/SSH is a Telnet and SSH client for Windows, providing secure terminal access with integrated SFTP file transfer and robust terminal emulation.
Developed by Celestial Software, AbsoluteTelnet is commercial terminal emulation software used by developers, system administrators, and enterprise environments. It supports industry-standard SSH protocols to protect session data across untrusted networks such as the internet.
Features include SSH (encryption, compression, port forwarding), SFTP file transfer, tabbed sessions, keyboard mapping, terminal emulation, and support for serial and legacy connections.
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MetaDefender OT Access
MetaDefender OT Access enables secure, just-in-time remote access to Operational Technology (OT) and Cyber-Physical Systems (CPS), allowing both internal employees and external vendors to connect safely over mutually authenticated, outbound-only TLS tunnels without exposing OT networks to inbound traffic risks. It supports various industrial and IT protocols (e.g., Ethernet/IP, MODBUS, OPC UA, S7Comm, Telnet, SSH, RDP, HTTPS), enabling compatibility across a wide range of legacy and modern OT infrastructure. Depending on deployment mode, the solution can be cloud-managed (with remote configuration via AWS-hosted services) or on-premises (with a local Management Console), making it suitable for both internet-connected and air-gapped environments. It leverages components such as an Admin UI, Windows client (or service-level client), and a Management Console (in on-site deployments) to manage connections and enforce security policies.
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sMonitor
sMonitor is a network monitoring software that allows you to verify the network connectivity of TCP/IP hosts on the Internet and LAN. The program periodically pings, or checks TCP and UDP ports on user specified computers or other network devices. If the destination host fails to reply to a ping, connection request, or user datagram, sMonitor alerts you using audible alarms, visible notifications, e-mail messages, third-party software, modem and telnet connections. Also, the program generates log files, CSV format files, creates and uploads by FTP the HTML file, which reflects a current status. Based on test results, the program can operate remote systems (power management, reboot, alarm reporting) by modem and telnet using custom scripts. sMonitor can run as standard Windows application or NT service. NetFlow2SQL Collector can be used to receive NetFlow packets from routing devices and store their contents into databases on Microsoft SQL and MySQL servers for retrieval and analysis.
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