Show HN: Remux – an open-source tmux workspace designed for iPhone

Remux, an open-source native iOS client for remote tmux workspaces built on Ghostty, is now available as a public beta on TestFlight. The app brings tmux's session, window, and pane model to a mobile-first interface, featuring file previews, localhost previews, direct SSH connections, and a shortcut palette with starter sets for shell, Claude Code, and Codex.

A native iOS client for remote tmux workspaces. remux-readme.mp4 Remux is a native iOS client for remote tmux workspaces, built on Ghostty. It brings tmux's session, window, and pane model into a mobile-first interface. It previews files and running dev servers straight from the terminal, and uploads photos and files, with markup for images. tmux sessions : Attach to running sessions or start new ones. Windows and panes : Swipe between windows, pick panes from a bottom sheet with live previews, and split, zoom, or close them. Shortcut palette : Run saved commands with a tap. Starter sets cover shell, Claude Code, and Codex, and you can add your own commands and groups. Attachments : Upload photos and files to the server, with markup for images. The remote path is typed at the prompt. File preview : Long-press a path in terminal output to preview it: code, images, PDFs, or HTML pages. Localhost preview : Long-press a localhost URL to open the dev server running on the remote machine, hot reload and WebSockets included. Cursor control : Hold the space bar or long-press in the terminal, then drag to place the cursor. Direct SSH : Remux connects straight to the server, with no relay and no account. Passwords and private keys are stored in the iOS Keychain, and trusted host keys are remembered. Themes : Ghostty default, Catppuccin Mocha, and Catppuccin Latte, with adjustable font size. Remux is available as a public beta on TestFlight: testflight.apple.com/join/fHqG1ruE https://testflight.apple.com/join/fHqG1ruE . You can also build from source. Requirements: - Xcode with iOS 18 SDK support - XcodeGen Fetch the prebuilt GhosttyKit framework: scripts/fetch ghosttykit.sh Generate the Xcode project and build: xcodegen generate xcodebuild build \ -project Remux.xcodeproj \ -scheme Remux \ -destination 'generic/platform=iOS Simulator' Run the tests: xcodebuild test \ -project Remux.xcodeproj \ -scheme Remux \ -destination 'platform=iOS Simulator,name=iPhone 17,OS=latest' To build GhosttyKit yourself instead of fetching it, see remux-ghostty https://github.com/h3nock/remux-ghostty and scripts/build release ghosttykit.sh /h3nock/remux/blob/main/scripts/build release ghosttykit.sh . Remux is built on Ghostty https://github.com/ghostty-org/ghostty 's terminal core and uses Citadel https://github.com/orlandos-nl/Citadel for SSH.