What are some alternatives?
When comparing ClockingIT and Keikai, you can also consider the following products
Basecamp - A simple and elegant project management system.
EtherCalc - EtherCalc is a web spreadsheet.
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
GanttProject - Project scheduling and management tool
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.