Killendar

Steve the Killer·SteveTheKiller.Killendar

Encrypted calendar for Windows. Install or run portable. GPLv3. No account, no sync, no telemetry.

Killendar keeps your appointments in a single file on your own machine, with optional SQLCipher AES-256 encryption at rest once you set a password. Month, week, day and agenda views, color categories, recurring appointments, and iCalendar import and export. Unlocked it is an ordinary SQLite database you can read, back up, or copy to another machine. Runs portable or installs for you or every user - no account, no sync, no telemetry. Open source under GPLv3.

winget install --id SteveTheKiller.Killendar --exact --source winget

Latest 1.1.0·August 17, 2026

Release Notes

1.1.0 adds seven themes, scalable interface sizing and more flexible month and sidebar layouts. It also fixes all-day editing, calendar layout, localization and machine-wide uninstall. Added

  • Seven themes: 98SE, Ectoplasm, Decay, Mourning, Sepulchre, Delirium and Malaise. Killendar now includes all thirteen Killer Tools palettes, with six classic accent colors for 98SE.
  • Interface scaling from 80% to 150% by scrolling the title-bar wordmark. Scale-aware minimum sizes keep the calendar and sidebar usable.
  • A folder picker in Manage Killendars for changing the data folder, including one-click portable storage beside the executable.
  • F5 reloads the open .kcal file from disk, including an encrypted Killendar already unlocked in the current session.
  • Polish translation, bringing the interface to eleven languages. Changed
  • Ctrl+wheel over Month view zooms between one and six visible weeks, increasing appointment capacity as the cells grow.
  • The appointment sidebar can be resized down to 250 pixels and remembers its width between runs.
  • The themed file picker remembers separate open and save folders, includes Explorer Quick Access, supports horizontal mouse-wheel scrolling, and is now used when loading an external Killendar.
  • The theme picker now uses a stable full-height list with a separate accent strip. Menus, overlays, selection states, sidebar layout and rounded corners have also been tightened across the interface. Fixed
  • Editing an all-day appointment no longer shows its exclusive stored boundary as the visible end date or adds another day each time the appointment is saved.
  • Machine-wide uninstall now requests administrator access and correctly removes the Program Files copy, Common Start Menu shortcut and HKLM registration.
  • Multi-day and ordinary appointments now share the same sorted, scrollable stack inside each Month-view day, eliminating the competing overlay lanes that caused overlaps and misalignment.
  • Week view now places all-day appointments under their actual dates instead of stretching each one across the visible week.
  • Calendar-generated weekday and month names now follow the selected interface language instead of the Windows display culture.
  • Month-view date numbers remain readable across selected, today, hover and pressed states.
  • Killendar now owns all of its theme resources and no longer depends on or loads files from a private sibling KillerUI folder, so a standalone clone builds with every theme intact.

Installer type: portable

x6448F8AE2B8963ED227C726A7914DCC2E614F8111FB57E53F93DEAF558CD3B7CFA

Details

Homepage
https://github.com/SteveTheKiller/Killendar
License
GPL-3.0
Publisher
Steve the Killer
Support
https://github.com/SteveTheKiller/Killendar/issues
Copyright
Copyright (c) 2026 Steve the Killer
Moniker
killendar

Tags

calendarcsharpdesktop-appdotneticalendaricsprivacywindowswpf

Older versions (1)

1.0.0
x64E3DD4A88A26221E965AA67EA5A734563C678B35403FBA7798AF104982A9604F7