AbsoluteTelnet!

Cyberduck is an open source FTP client.

cURL is a computer software project providing a library and command-line tool for transferring data using various protocols with URL syntax: supporting FTP, FTPS, SCP, SFTP, HTTP, HTTPS, TFTP, TELNET, DICT, LDAP, LDAPS and FILE. cUrl supports HTTPS certificates, HTTP POST, HTTP PUT, FTP uploading, kerberos, HTTP form based upload, proxies, cookies, user+password authentication, file transfer resume, http proxy tunneling and a busload of other useful tricks.

FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

SSH and SFTP client for Windows incorporates:

The all in one terminal client for Android including SSH, Local Shell, Mosh and Telnet support.

SmartFTP is an FTP (File Transfer Protocol), FTPS, SFTP, WebDAV, S3, Google Drive, OneDrive, SSH, Terminal client. It allows you to transfer files between your local computer and a server on the Internet. With its many basic and advanced Features SmartFTP also offers secure, reliable and efficient transfers that make it a powerful tool.

Royal TS provides easy and secure access to your remote systems

FTP Rush is a powerful FTP/FXP/SFTP/TFTP client sofware for Windows 2000/XP/2003/Vista/Win7. It is designed to fit any transfer need and allows you to quickly upload or download files in all directions: from FTP Server to Local, Local to Server or Server to Server.

ZOC is a powerful and well-established terminal emulator and telnet client, well known for its outstanding user interface with tabbed multi session support.

SSH Proxy can help you turn any remote SSH server into a SOCKS v5 proxy, intuitive and easy to use.