SSH client and session manager for Windows, Linux and macOS.

~/xtermium $ cat ssh.txt

An SSH client with tabs, on Windows, Linux and macOS.

XTermium is a free, open-source SSH client and session manager for Windows 10 and 11, Linux and macOS. Every session you save sits in a folder tree you search by typing, and opens in a tab. Split any tabs into panes, side by side, stacked, 2×2 or tiled, and type into many at once with broadcast. It signs in with your SSH agent (OpenSSH, or Pageant on Windows), key files, passwords or keyboard-interactive, directly or through a jump host. Host keys are trusted on first use, and a changed key refuses the connection instead of asking. A dropped connection comes back by itself. The SFTP file panel and your local, remote and SOCKS5 tunnels use the connection you already have, and the status bar shows the negotiated cipher and a live round trip. A tab can move to its own window and come back when you’re done.

~/xtermium $ cat openssh.txt

Built-in OpenSSH, or an SSH client with tabs?

Windows 10 and 11 include Microsoft’s OpenSSH client, so ssh works in PowerShell with nothing to install. For one server now and then, that is enough. When you juggle many, XTermium keeps what you already have and adds the parts a bare ssh command doesn’t.

~/xtermium $ cat sessions.txt

An SSH session manager: folders, search, one login.

Sessions live in a folder tree. Tag a folder, and search finds every session under it; type a name, press Enter, and you’re on it in the tree. Workspaces keep separate sets of sessions and folders, one dropdown away.

Bring what you have: import a bookmarks .ini file (folders, jump hosts, tunnels, each session’s font, colours and TERM) or your ~/.ssh/config. Stored passwords are not imported.

~/xtermium $ cat jump-hosts.txt

Jump hosts and an SSH gateway.

Give a session a jump host and XTermium connects through it. Or put an SSH gateway on a shared login (host, port, user, password or key) and every session that picks the login goes through it.

SSH sessions without a jump host of their own use the gateway as one. RDP and VNC reach their host through a port forwarded over it. Website sessions send every request through it as a SOCKS proxy, internal host names included.

~/xtermium $ cat sftp.txt

An SFTP client on the same connection.

Open the file panel beside an SSH tab and it uses the connection you already have. Browse, download to your Downloads folder, drag files in to upload, rename, delete and make folders, with progress bars. VNC desktops get one too, over an SSH connection of their own to the desktop’s host.

When the shell reports its folder, the panel follows it as you move around. fish does that by itself; for bash, add this line to ~/.bashrc, and for zsh the same in precmd:

~/xtermium $ cat tunnels.txt

An SSH tunnel manager you can watch.

Local, remote and dynamic (SOCKS5) tunnels, saved by name; you start and stop them, or a script or an agent does. Each one shows its traffic live: throughput each way, active and total connections, bytes, and a 60-second sparkline.

~/xtermium $ cat terminal.txt

A terminal that keeps up.

A Rust backend built on WezTerm’s VT engine and a GPU-drawn terminal. Pictures show inline over the kitty graphics protocol, sixel and OSC 1337, so a chart drawn on the server shows over SSH with no X forwarding. Highlight rules colour ERROR, WARN, IP addresses or any pattern you write, which helps when tailing logs. Ctrl+Shift+F finds in the scrollback.

~/xtermium $ cat faq.txt

Questions about the SSH client.

~/xtermium $ ls ~/xtermium

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