Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.