Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
Online Stopwatch and Timers - Sometimes everybody need to count time for some reason.
Bit.ai - Bit is a smart real-time document collaboration platform for teams to create interactive documents, manage digital content and track document insights.
vClock - Web based time tools including Alarms, Timers, Stopwatch, and World Clocks. vClock is customizable and has a clean user interface.
Airborn - Create and edit documents online without sacrificing your privacy