title: Open source component or unit for exporting Delphi TDataSet to native XLS without Excel installed
body: <p>Do you possibly know about the existence of a free and open sourced Delphi code to export TDataSet to native XLS format? The question was previously asked <a href="https://stackoverflow.com/questions/2493071/exporting-to-excel-from-delphi-without-having-excel">here</a>, yet I am looking for a free solution.</p>
  
  <p>As observed in for example TeeChart.TeeStore.TSeriesDataXLS.SaveToStream writing a native XLS export function is not a rocket science, yet I struggle to find an existing solution, which would definitely save some time and money (for commercial component which would be used in 10-20%).</p>
  
  <p>It would be beneficial if such export code would allow color and text style changes, but for me personally it is not crucial.</p>