Termphin: SSH & SFTP Client

Stop losing your terminal sessions. Termphin is an SSH and SFTP client built for resilience. Lock your screen, switch from WiFi to mobile data or lose signal entirely: an optional open-source agent on your server keeps the shell running, and Termphin reconnects you exactly where you left off.

Sessions that survive disconnects
The agent is small, MIT-licensed and runs on your server, so your session no longer depends on your phone's connection. Termphin reconnects on its own and resumes from the output you missed instead of starting over. Builds, long-running commands and AI coding agents keep going while you are away. On a slow link, predictive local echo shows what you type before the server answers.

A real terminal
Native rendering, not a WebView wrapper. TUI applications, editors, box-drawing characters, spinners and diffs display exactly as intended. 14 color themes, two sessions side by side in split view, and a special-keys toolbar you can rearrange.

AI coding agents over plain SSH
Claude Code, OpenCode and any other agent that runs in a terminal work the same as on a laptop - there is no proprietary pairing protocol. Start a long task, lock your screen, and read the result later.

Jump hosts and port forwarding
- Reach private machines through a bastion with jump hosts (ProxyJump), chained if needed
- Local and remote port forwarding to open SSH tunnels to databases and dev servers

Security
- Host key verification: each server's key is pinned on first connect and checked on every connection after, with a known hosts list in Settings
- Keyboard-interactive login for 2FA, TOTP codes and PAM prompts
- Generate Ed25519 or RSA keys, or import your own
- App lock with PIN or fingerprint
- Passwords and keys are stored in an encrypted vault on the device and are never sent to any server of ours

Built-in SFTP
- File browser for uploads, downloads and whole folders
- Text editor with syntax highlighting
- Image preview
No need to switch apps to edit a config or move a file.

Servers, organized
- Colored groups for servers, keys and snippets, with search by name or host
- Snippets: save a command, run it on any server in one tap, and keep a history of every run with its exit code
- Encrypted backup protected by a passphrase, to move everything to a new device

Works with any SSH server. Termphin detects the shell on the remote side, including PowerShell on Windows.