FreeXL is an open source library to extract valid data from within Spreadsheets.
The following document formats are supported starting since version 2.0:

• MS Excel legacy BIFF binary format (.xls)
• MS Excel new XML-based format (.xlsx)
• Free/OpenOffice Calc XML-based format (.ods)

• to be simple and lightweight
• to be stable, robust and efficient
• to be easily and universally portable
• completely ignoring any GUI-related oddity

Note that the final goal means that FreeXL ignores at all fonts, sizes and alignments, and most formats. It ignores Pivot Table, Charts, Formulas, Visual Basic macros and so on. FreeXL is structurally simple and quite light-weight (typically 40-80K of object code, stripped).

FreeXL is licensed under the MPL tri-license terms; you are free to choose the best-fit license between:

• the MPL 1.1
• the GPL v2.0 or any subsequent version
• the LGPL v2.1 or any subsequent version