# OnlyKey Docs > Generated by docmd Documentation for OnlyKey hardware security tokens by CryptoTrust. ## Documentation Files - [Page Not Found](https://docs.onlykey.io/404/) - [Using OnlyKey with Windows Active Directory and Azure AD](https://docs.onlykey.io/activedirectory/) How to use OnlyKey with Windows Active Directory and Azure AD for 2-factor Authentication and Protection from Ransomware - [OnlyKey App](https://docs.onlykey.io/app/) The OnlyKey App is used for the initial setup and configuration of OnlyKey. Supported on Windows, macOS, and Linux. - [OnlyKey Command-Line Utility](https://docs.onlykey.io/command-line/) The OnlyKey Command-Line Utility is a command line interface to OnlyKey. - [OnlyKey DUO User's Guide](https://docs.onlykey.io/duousersguide/) The user's guide provides step-by-step instructions for configuring and using OnlyKey DUO. - [OnlyKey FAQ](https://docs.onlykey.io/faq/) Frequently Asked Questions - [OnlyKey Features](https://docs.onlykey.io/features/) Detailed information on OnlyKey Features - [OnlyKey Firmware](https://docs.onlykey.io/firmware/) The OnlyKey firmware runs on the OnlyKey itself and provides the core functionality of OnlyKey. - [Using OnlyKey for Full-Disk Encryption and Head-less Server](https://docs.onlykey.io/full-disk-encryption/) How to use OnlyKey for full-disk encryption - [Import keys from Keybase, Protonmail, and GPG](https://docs.onlykey.io/importpgp/) How to use export keys from Protonmail, Keybase, and GPG and load onto OnlyKey - [OnlyKey Docs](https://docs.onlykey.io/) This is the official OnlyKey documentation site. Select from the topics shown below or from the left sidebar. - [International Travel Edition Guide](https://docs.onlykey.io/ite/) Follow this guide to use the International Travel Edition OnlyKey - [KeepassXC Upgrade Guide](https://docs.onlykey.io/keepassxc-upgrade/) Follow this guide to upgrade OnlyKey firmware and configure KeepassXC challenge-response - [Upgrading Firmware From Beta6 to Beta7](https://docs.onlykey.io/legacyupgradeguide/) Follow this guide to upgrade firmware from Beta6 to Beta7 - [Using OnlyKey with Linux](https://docs.onlykey.io/linux/) Guide for using OnlyKey on Linux and creating a UDEV rule for OnlyKey. - [Using OnlyKey with Mobile Devices (iPhone and Android)](https://docs.onlykey.io/mobile/) How do I use OnlyKey with mobile devices like iPhone and Android? - [OnlyKey SSH/GPG agent](https://docs.onlykey.io/onlykey-agent/) Using OnlyKey as hardware SSH and GnuPG agent. - [OpenSSH](https://docs.onlykey.io/openssh/) The OnlyKey can be used with OpenSSH to provide multifactor authentication for SSH keys - [Plausible Deniability Setup Guide](https://docs.onlykey.io/pdguide/) Follow this guide to use the plausible deniability feature of OnlyKey - [Using OnlyKey with Qubes OS](https://docs.onlykey.io/qubes/) How to use OnlyKey with Qubes OS - [About Security](https://docs.onlykey.io/security/) This article talks about the security features and security architecture of OnlyKey - [Upgrade Guide](https://docs.onlykey.io/upgradeguide/) Follow this guide to upgrade OnlyKey firmware and desktop app - [OnlyKey User's Guide](https://docs.onlykey.io/usersguide/) The OnlyKey user's guide provides step-by-step instructions for configuring and using OnlyKey. - [Using OnlyKey with Virtual Machines](https://docs.onlykey.io/virtualmachines/) How to use OnlyKey with VMware and Virtualbox - [OnlyKey WebCrypt App](https://docs.onlykey.io/webcrypt/) With WebCrypt all you need is an OnlyKey and a browser to encrypt files and messages on-the-go. - [Works With OnlyKey](https://docs.onlykey.io/workswithonlykey/) OnlyKey integrates with thousands of services and applications - [Using OnlyKey with Windows Subsystem for Linux](https://docs.onlykey.io/wsl/) How to use OnlyKey with Windows Subsystem for Linux (WSL 2)