the problem is that excel is a very versatile swiss army knife and that any replacement has to be flexible. It's actually not particularly hard to build the in

the problem is that excel is a very versatile swiss army knife and that any replacement has to be flexible. It's actually not particularly hard to build the individual components (I put this together in a weekend: http://niggler.github.com/js-xls/ http://niggler.github.com/js-xls/ http://niggler.github.com/js-xlsx/ http://niggler.github.com/js-xlsx/ (pure-JS in-browser parsing of simple xls and xlsx files) but it is hard to match the workflows.