Is "All of them" an acceptable answer? In particular, http://sheetjs.github.io/js-xls/ http://sheetjs.github.io/js-xls/ and http://sheetjs.github.io/js-xlsx/ h

Is "All of them" an acceptable answer? In particular, http://sheetjs.github.io/js-xls/ http://sheetjs.github.io/js-xls/ and http://sheetjs.github.io/js-xlsx/ http://sheetjs.github.io/js-xlsx/ (which really should have been one; due to licensing concerns, they started as two projects and I hope to merge them at one point)