Lantern Terminal

What it does

Screenshot

Installing

Windows

Download and run Lantern-Terminal-0.5.0-windows-x64-setup.exe. It installs for your user. Start Lantern Terminal from the Start menu. For a portable copy, extract the Windows ZIP and run LanternTerminal/lantern-terminal.exe.

Linux

Download the Debian package and run these commands in its download directory:

sudo apt install ./lantern-terminal_0.5.0_amd64.deb
lantern-terminal

The package was built with Qt 6.10.2 and declares its actual library requirements. If your distribution has older libraries, use the source build instructions. The Linux tar archive requires those same libraries.

More detail: installation and troubleshooting.

Your first session

1. Choose File → New session, select a protocol and enter the connection details.
2. Give the session a name and save it. It appears in the Sessions pane.
3. To open it later, double-click its name, or select it and choose File → Connect selected.

Select an entry and right-click for manual ordering or a desktop shortcut. Choose Tools → Manage button bars… to organise your saved actions.

If the pane is hidden, choose Edit → Go to Session Manager. Open Options → Session properties → Terminal → Appearance for the Choose colour… buttons.

Saved sessions and appearance guide →

Documentation

• Overview and quick start
• Installing, upgrading and troubleshooting
• Saved sessions, themes, button bars and backups
• File transfers and logging
• Python and Lua scripting
• Building from source
• Capabilities and release checks

Offline Markdown guides are available with the user guide, build instructions and scripting guide. The source package contains the complete specification and documentation.

Downloads

Version 0.5.0. Free downloads for 64-bit Windows and Linux.

To verify downloaded files, download SHA256SUMS to the same directory and run sha256sum -c SHA256SUMS --ignore-missing.

Bot scripts (experimental)

Two door-game bots written in Lua. They were made for the SyncTERM-Lua fork and run unchanged in Lantern Terminal 0.3.3 or later, so the same files work in both programs.

Set up the BBS session once

1. Choose Tools → New BBS session… and pick Telnet (or RLogin).
2. Enter the BBS address and put your BBS user name in Username.

For a session you already have, right-click it in the Sessions pane and choose Apply BBS settings….

Run a bot

1. Log in to the BBS and enter the game. Start the LORD bot at the "Enter the realm" menu or in the Town Square; start the TradeWars bot at the sector Command prompt.
2. Choose Script → Run… and pick the script. Answer its questions; its progress appears in the Activity pane.
3. Choose Script → Cancel to stop it at any time and carry on by hand. It also stops when the game exits or the BBS disconnects.

Each bot keeps its log, and the TradeWars bot its map of the universe, in the folder the script is in. Run one bot per character, and never for a character that another bot or player is using at the same time.

Release notes and scope

New in 0.5.0: the biggest update so far.

• SFTP Browser (F7): this computer and the server side by side. Copy files and folders either way, resume interrupted transfers, set permissions, and drop files on the window to upload them.
• Copy Public Key to Server, like ssh-copy-id: puts your key on a server, sets the permissions SSH needs and checks that the key logs in. An SSH Agent window manages your agent's keys, including smartcards and tokens.
• Remote Desktop (RDP) sessions in a tab on Windows and Linux: Network Level Authentication, the desktop fitted to the tab, keyboard, mouse, clipboard and Ctrl+Alt+Del. The server's certificate is checked like an SSH host key.
• Tear-off tabs: drag a tab out to give it its own window, and drag it back to dock it.
• Sync your sessions, folders, commands and button bars between computers through a shared folder (Nextcloud, Syncthing, Dropbox or a network share). Passwords and computer-specific settings stay where they are.
• Update notifications: Lantern tells you when a new version is out and can install it for you.
• Function keys for common actions (F1 lists them all); programs that need their own function keys can have them all back.
• The built-in SSH engine now does jump hosts, X11 and agent forwarding, Kerberos, Ed25519 certificates, most OpenSSH options and a FIPS-approved algorithms mode.
• Built-in Xmodem, Ymodem and Kermit transfers alongside Zmodem.
• Sixel images, 132-column mode, double-size lines, margins, and the Wyse 60 and SCO ANSI terminal types.

See the changelog for the details.

Added in 0.4.2: new BBS sessions are made with Tools → New BBS session…. The BBS tick-box has gone from File → New session, so the ordinary wizard is back to plain connection settings. Existing sessions are not changed.

Added in 0.4.1: Apply BBS settings to sessions you already have: right-click them, or a folder, in the Sessions pane, or use Options → Apply BBS settings to this session…. It sets the same options as a new BBS session and keeps everything else.

Added in 0.4.0: BBS support: BBS sessions with the CP437 character set, a DOS-style ANSI-BBS screen (bright bold, blinking text, iCE colours, CP437 symbols, ANSI music ignored), a built-in VGA font whose block and line characters join without gaps, and 80×25 scaled to the window. RLogin logs straight in, and its password can be kept in the system password store. Zmodem downloads start by themselves and uploads start when the BBS is ready, with progress and Cancel. Tools → Import BBS list (SyncTERM) brings in your SyncTERM dialling directory with a preview. See the sessions guide and transfers guide.

Added in 0.3.4: fixes a crash. Answering a script's message or question more than a minute after it appeared, such as a bot's "day finished" message, closed Lantern. Script messages and questions now wait for you however long you take. Nothing else has changed since 0.3.3.

Added in 0.3.3: scripts written for the SyncTERM-Lua fork run unchanged with Script → Run. Lantern provides SyncTERM's script functions, including PCRE2 regular expressions, triggers and the bbs table, so BBS bots and login scripts work in both programs. A new CP437 character encoding suits BBSes and door games. See the bot scripts below and the Lua guide.

Added in 0.3.2: SSH now runs in a built-in engine (libssh) by default. The status bar shows the cipher and key exchange actually negotiated; host-key, passphrase and password questions appear in the terminal; it uses your SSH agent, including the Windows OpenSSH agent, and supports local, remote and SOCKS port forwarding. Sessions that need options it does not know use OpenSSH automatically, and Session properties → Connection → SSH2 → SSH engine can choose OpenSSH for any session.

Ctrl+P, Ctrl+N, Ctrl+F, Ctrl+S, Ctrl+Q, Alt+letters and F1 now reach the terminal; Lantern's own shortcuts use Ctrl+Shift (Ctrl+Shift+F find, Ctrl+Shift+Q exit). Telnet supports binary mode for 8-bit and CP437 data, pasted line breaks are sent as Enter, settings import merges and lists anything that would run a program, and automatic reconnect no longer retries failed logins. Two crashes are fixed and drawing is several times faster. See the changelog.

Added in 0.3.1: opening another session preserves SSH tabs during connection and authentication. Live SSH sessions show as open, and authentication status recognises older Windows OpenSSH clients.

Added in 0.3.0: bundled Lua 5.4.9 scripting for Linux and Windows, with prompt capture, tabs, binary sends, logging, configuration and dialogs. Lua recordings, examples and a complete Lua guide are included.

Added in 0.2.1: SSH failures now display the actual reason. A server that accepts SSH keys only gives clear guidance for choosing an authorised private key. Accepting a server fingerprint is separate from logging in; saved server trust survives recreating a session.

Included since 0.2.0: readable session-wizard colours, immediate Options → Theme → System / Light / Dark selection, and a fix for Windows SSH failing to open its diagnostic logfile. This update also adds manual session/folder ordering, desktop session shortcuts, command cut/copy/paste, script arguments and named button bars with per-session selection.

All 16 test suites passed on Linux, including new checks of the SSH tools against a test SSH server, Xmodem, Ymodem and Kermit against the standard lrzsz and G-Kermit programs, and RDP against FreeRDP's test server. The Windows build's RDP and SSH engine were checked under Wine. The Windows installer, bundled scripting, SSH engine, upgrade and uninstall checks passed under Wine, and the Windows SSH agent login was confirmed on a real Windows PC. Physical Windows ConPTY and device/provider testing remains outstanding. See release verification.

The current release includes the features listed above. Some legacy terminal and protocol compatibility, ANSI music playback and some advanced settings remain future work. RDP clipboard and resizing have not yet been tried against a real Windows server. Read the capabilities and limitations before choosing it for a particular workflow.

The Windows package includes libssh 0.11.3 with OpenSSL 3.5.9 and zlib 1.3.1 for the built-in SSH engine, FreeRDP 3.32.2 for Remote Desktop, Python 3.14.10 and Lua 5.4.9. For the OpenSSH engine and SFTP it uses system OpenSSH when available, with Microsoft OpenSSH 10.4.0.0p1 Preview as the bundled fallback. Linux uses the distribution's libssh, FreeRDP, OpenSSH and Python; Lua is bundled.

Source and licence

Written in C++17 with Qt, libvterm, libssh and Lua. First-party code is available under the MIT licence; bundled dependencies retain their own licences and notices. Both source archives include the specifications, tests, Linux shell scripts and Windows PowerShell build scripts.

Build instructions · MIT licence · Third-party notices

Questions and bug reports: slaterm@theiguru.au.