title: excel formulas web application
body: <p>We deal with business units who use excel sheets to import their data, and have various sheets  with parameters and formulas for their calculations. They have hit the data limitations of excel. In terms of designing a web based application for them, they will loose the calculation power of excel and their familiar environment. What would be the suggested design for such a web based application which can match the computation power of excel ?
  We are exploring openrules etc. and mostly develop java based applications.
  Can excel be used as a (web) client with access /mssql as a backend ?
  Any other design/rules engines/framework suggestions would be helpful .</p>