Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Padlet - Visual boards for organizing anything.
Digital Clock 4 - Beautiful customizable clock with plugins
BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.