xlsLib
C++/C library to construct Excel .xls files in code.
A multiplatform C++ library for dynamic generation of Excel .xls files containing multiple worksheets. Unlike .csv files, these can be directly opened by Excel and thus provide an excellent way to output large data sets that require further analysis.
To see the latest changes, select "Files" and view the README text displayed at the bottom of that pane.
IMPORTANT: Major changes are contained in the current SVN source. If you have time please try to use it or the xlslib-package-2.4.0b1.zip...