We have a library that we released lGPL to write various spreadsheet formats (.ods/OpenDocumentFormat, .xls/Excel and .xlsx/Microsoft Office XML). It was originally created by another coder and we're looking for someone to fix a few issues in it:
* In Mac OS X, Excel output doesn't produce a readable file. This lib was originally written for Windows and Linux only as the original developer didn't have access to a Mac.
* The .xlsx output is based on an out of date version of the spec so the files aren't readable. I do not know if this is a major overhaul to fix or a minor one. I suspect it's only minor changes but I could be wrong.
The source can be found here:
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