Get eSemnBun
Choose your device. Download the installer or open its store listing, then follow the setup guide.
macOS
Universal DMG · Mac App Store
macOS 15 or later. One signed, notarized DMG for Intel and Apple Silicon. The Mac App Store edition uses an in-app browser and omits the background reader helper.
Store availability depends on review, testing access and region.
Windows
MSI installer · Microsoft Store
Windows 10 (1809) or later. Use the x64 MSI for a direct installation, or open the Microsoft Store listing.
Store availability depends on review, testing access and region.
iPhone & iPad
App Store · Phone & tablet
iOS 17 or later. Sign and share documents on your iPhone or iPad with a compatible reader and adapter.
Store availability depends on review, testing access and region.
Android
APK · Google Play
Android 8 or later, with USB host/OTG support. The APK supports ARM and x86 devices, including tablets.
Store availability depends on review, testing access and region.
Linux
Desktop app & CLI
Choose the desktop app for a graphical signing workspace, or the separate command-line app for terminal workflows and automation.
Desktop app
The GNOME app: select your card, drop documents, sign and verify. Install the DEB on Ubuntu or Debian, the RPM on Fedora, or use the Flatpak bundle.
Installation & setup guideCommand-line app (CLI)
The esemnbun terminal tool for signing, verification and the local browser service. Install an esemnbun-cli package or extract the TAR.GZ archive. These downloads do not include the desktop interface.
Release files & command line
Find release notes, SHA-256 checksums, alternative packages and CLI downloads on GitHub.
Open GitHub release