Spreadsheet::WriteExcel is a cross-platform Perl module for producing spreadsheets in an Excel format. This format is virtually imperceptible from a file produced by Excel itself, which means it can be read flawlessly by MS Office applications, Gnumeric, and other similar spreadsheet packages out there.

Perl, the acronym for "Practical Extraction and Report Language" is a high-level general-purpose programming language. It is the brainchild of Larry Wall, who developed this language in 1987. However, Larry continues to develop and maintain this language. Today, Perl is available virtually on every computer platform – from Apple Macintosh to VMS.