AutoSpreadsheet is a programmable macro tool for .xls format spreadsheets. It is ideal for situations when you have to perform a repetitive series of operations on a spreadsheet with a known layout but with arbitrary data.
Read data from Excel 97+ spread sheets without Microsoft! Provides an API to write applications that read Excel documents. The xlreader tool converts data to tab delimited, CSV or SQL inserts. Written in C. Based on the the Java version by Andrew Khan.