ArcShell is a modern SSH terminal AND a mobile server-management platform for system administrators, developers and on-call engineers. Everything runs on-device – no account, no cloud, no telemetry. One-time purchase, no subscription, no ads.

━━━ WHY ARCSHELL ━━━
You probably already have an SSH app. ArcShell is the one that also manages your infrastructure from the same place – Proxmox, Proxmox Backup Server, OPNsense and Kubernetes – on its own auditable, post-quantum SSH stack. What usually takes three or four apps, in one.

• Own SSH-2 library (open source, Apache 2.0)
• Post-quantum key exchange (ML-KEM-768 hybrid with X25519) – today
• Zero telemetry, zero ad SDKs, zero trackers
• One-time purchase – no subscription, no in-app purchases, no paywalled features

━━━ TERMINAL ━━━
• Built-in xterm-256color emulator, 24-bit truecolor, no root required
• Multi-tab with groups; save & restore your open tabs as named session layouts
• Clickable links (OSC 8), themes + plugin palettes, volume-key font zoom
• tmux integration with reclaim, Mosh, Telnet, USB-serial (OTG)

━━━ PROXMOX & VIRTUALIZATION ━━━
• Proxmox VE as a connection type – cluster dashboard over the native REST API, fast and live
• Create VMs with a full wizard (UEFI/TPM/SCSI/ISO) and edit hardware in detail; start/stop, snapshots, clone, migrate, backup
• Guest consoles: noVNC with automatic keyboard layout plus a real serial-console tab
• Proxmox Backup Server (datastores, backups, verify, GC, restore) and OPNsense (dashboard + firewall) as their own host types
• Everything works behind a jumphost

━━━ SERVER TOOLS ━━━
• Fleet: run one command across host groups with live per-host results
• Docker dashboard, journald log viewer, package manager (apt/dnf/pacman/apk/zypper), server-info gauges
• Config GUI for nginx/sshd/systemd with guided wizards (SSL, SSH hardening) and validation before apply

━━━ FILE COMMANDER ━━━
• Dual-pane file manager – local, SFTP, Nextcloud, WebDAV, SMB
• Quick-edit with syntax highlighting, file compare, bookmarks

━━━ AUTH & SECURITY ━━━
• Password, public key, certificate, FIDO2/WebAuthn, agent forwarding
• TOFU host-key verification, known-hosts management
• Encrypted at rest (SQLCipher, AES-256), App Lock via biometric/PIN, per-host VPN requirement, screenshot protection

━━━ PRIVACY & FAIRNESS ━━━
• Zero telemetry – no analytics, no crash reporting, no trackers
• Ad-free from the very first start
• SSH library open source (Apache 2.0) – the crypto stack is auditable
• Backup encrypted locally or via share-sheet; import your OpenSSH config

━━━ PRESENTATION MODE ━━━
• Live-stream your terminal to any browser on your LAN, password-protected, with filters that mask secrets before they leave the device

━━━ LOCALIZATION ━━━
English, German, Spanish, French, Italian, Japanese, Korean, Dutch, Portuguese, Simplified and Traditional Chinese. Offline handbook included.

Feedback and bug reports: via Play Store or arcshell.app@arcan-it.de.