What are some alternatives?
When comparing EtherCalc and Wrike, you can also consider the following products
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Basecamp - A simple and elegant project management system.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Smartsheet - Smartsheet is an intuitive online project management tool enabling teams to increase productivity using cloud, collaboration, & mobile technologies.