Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.

T-Clock Redux - T-Clock Redux in an enhanced fork of Stoic Joker's T-Clock 2010 with ISO week number support...

Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.

UKs Kalender - This program helps you organizing your dates and tasks and reminds you of upcoming events.

DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.