My Daily Planner - Organize your day with pen & paper. Free printable template.
Gestimer - For those little reminders during the day
Amazing Marvin - Customizable personal productivity tool
Timer Tab - Online countdown timer, alarm clock, and stopwatch.
FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Online Stopwatch - Online Stopwatch is free to use online tool that allows you to keep track of the important events and tasks that you are performing.