Günther vs ShellDiver

Your server's command center, from your pocket. Günther connects your iPad or iPhone to your dev machine over SSH and gives you a full command center — dashboard, terminal, GitHub, and AI agent control. No cloud relay, no middleman, no third-party servers. CUSTOMIZABLE DASHBOARD 90+ command templates across 16 categories: system stats, git, Docker, admin, services, logs, GitHub CLI, network, CLI launchers, Claude Code, tmux, deployment, SSL & cron, databases, CI/CD, and file operations. Add from the gallery, build with the guided "Bash Libs" command builder, or create your own. 9 output layouts (gauge, counter, table, log viewer, and more). Real-time polling for CPU, memory, and GPU. One-tap execution for everything else. GITHUB INTEGRATION Browse issues and PRs from your dashboard. Tap to expand, long-press to preview details — title, body, labels, comments, changed files. Send any issue straight to Claude Code with one tap. GitHub OAuth device flow for direct token setup, or use gh auth already configured on your server. Review and approve pull requests from a dedicated PR Approver card. AI AGENT CONTROL Günther reads Claude Code's output and renders it into a real mobile UI — plans, tool approvals, thinking steps, file diffs. A jobs panel tracks file edits, commands, and subagents in real time. Approve, deny, or session-approve tool calls. MCP tools display with server and tool name badges. Discover and invoke skills from the slash command menu. Choose between Sonnet, Opus, and Haiku models. TERMINAL & FILE EXPLORER Full interactive terminal with PTY support, 256-color output, and arrow keys. Browse remote directories with syntax-highlighted file preview. Upload photos and documents over SFTP. WHAT ELSE • Resume sessions exactly where you left off — even after closing the app • Full-screen reconnect overlay when returning from background • Time-sensitive push notifications that break through Focus modes • GitHub issues and PRs at a glance — send to Claude Code with one tap • Import existing SSH keys or generate new Ed25519 keys in-app • Biometric app lock with Face ID / Touch ID • iCloud sync for settings across devices • Light, Dark, and System themes BUILT FOR SECURITY • Direct SSH from device to server — nothing in between • Post-quantum key exchange (ML-KEM) — quantum-resistant encryption • Biometric app lock with Face ID / Touch ID • Built-in SSH key generation and import (Ed25519, RSA, ECDSA) • Keys stored in iOS encrypted keychain • No analytics. No tracking. No telemetry. BUILT FOR PERFORMANCE Flutter UI. Rust SSH engine with post-quantum cryptography. No JavaScript runtime, no Electron, no web views. Native ARM on both sides of the FFI bridge. REQUIRES Claude Code features require Claude Code installed on your server with an Anthropic API key or Claude Pro/Max subscription. Günther is the remote control — it does not include or replace a Claude Code subscription. GETTING STARTED Add a connection. Authenticate. Pick a project. You're running in under two minutes — Günther walks you through SSH key setup during onboarding. WORKS WITH • Mac (macOS) • Linux servers • Cloud VMs (AWS, GCP, DigitalOcean, etc.) • NVIDIA Jetson • Raspberry Pi Free 3-day trial. One-time purchase to unlock — $9.99 launch price ($14.99 after). No subscription. Günther is an independent project by Emberbright Studio, not affiliated with or endorsed by Anthropic, GitHub, Apple, Docker, or any other third party. Claude Code is a trademark of Anthropic, PBC. GitHub is a trademark of GitHub, Inc. Apple, iPhone, iPad, and App Store are trademarks of Apple Inc. All other trademarks are the property of their respective owners.

With software, free is usually a question rather than an answer. Here it is arithmetic: no server of ours, no accounts, no analytics — nothing for a subscription to pay for. Sync, startup commands, port forwarding: all of it is in the app. WHERE YOUR KEYS LIVE In your device's keychain. ShellDiver has no account and no sign-in — there is simply nowhere on our side for anything of yours to sit. An Ed25519 key either travels with you through iCloud Keychain, end-to-end encrypted, or stays on this device behind Face ID. A Secure Enclave key is created inside the security chip. It cannot be read out — not even by ShellDiver — never leaves the device, and will ask for Face ID on every sign-in if you want it to. THE VAULT Instead of iCloud you can take syncing into your own hands: an encrypted file in a place you choose. A USB stick, a cloud folder, or your own WebDAV server, so Nextcloud, ownCloud, a Synology, an Apache with mod_dav. It works across different Apple IDs and carries the secrets with it: saved server passwords and private keys. Only your devices encrypt and decrypt. Whoever runs the storage location sees nothing but unreadable files. You add a second device with a QR code, without typing your passphrase there. THE TERMINAL It does not hang up because you looked somewhere else for a minute: the connection belongs to the session, not to the screen. The running build and the half-typed line are still there when you come back. Up to 20 sessions as tabs, terminals and files mixed. Real xterm emulation: colour, UTF-8, resizing that works — htop, vim and colourful logs look the way you expect. Plus search through the scrollback, your choice of monospaced font including Nerd Fonts, and five colour schemes. On iPhone there is a row above the keyboard with esc, ctrl, tab, arrows and a paste key, because a phone has no ⌘V. When the link drops, ShellDiver notices through keepalives and rebuilds it by itself. This is SSH, not Mosh: the new shell starts fresh. SIGNING IN WITHOUT GUESSING ShellDiver asks the server which methods it offers and works through whatever it holds credentials for. That covers publickey followed by keyboard-interactive — 2FA after the key — and equally a server that only offers keyboard-interactive while the host is saved as "password". One-time codes are never pre-filled and never stored. You confirm a host key once, by its fingerprint. Every connection after that checks it, and a key that has changed is refused rather than waved through. THROUGH A JUMP HOST When a server is only open on the inside, you give it a jump host — OpenSSH's ProxyJump. The jump host then forwards nothing but encrypted bytes and cannot read along; both sign-ins are signed on this device. So your key does not have to sit on the machine in between, and a Secure Enclave key works here too. FILES AND TUNNELS The SFTP browser downloads and uploads, whole folders included, renames, and deletes recursively. Local port forwarding brings a database or an admin interface onto this device. It listens on 127.0.0.1 only and cannot be reached from outside; each rule holds its own connection, so a tunnel does not fall with a terminal. WHAT YOU ALREADY HAVE Your ~/.ssh/config is imported, with each IdentityFile matched against the keys you have and any ProxyJump resolved; so is known_hosts, hashed entries as far as they can be matched. Keys come in as Ed25519, RSA or ECDSA — from the OpenSSH container, from PuTTY's .ppk (v2 and v3), and from the PEM family. A passphrase on the file is used once during import and not kept. Snippets are also the buttons above the keyboard — global or bound to one host, with a confirmation step if you want one. One per host runs by itself as soon as the shell is open. The backup is a JSON file you can read — secrets sit inside an encrypted block under a passphrase you choose. Without it nobody gets at them, us included.