xlCompare is a new generation of the WCT utility - software for comparing and merging Microsoft Excel workbooks.
In the past xlCompare was an add-in for Microsoft Excel, named WCT. WCT used Excel to open and display workbooks, merge results, ... Now xlCompare is a standalone application. xlCompare doesn't depend on the Excel or any another application. We've created it on the our own spreadsheet calculation engine, created for xlCompiler project. Now you don't need Excel to open workbooks and work with xlCompare.
xlCompare is powered by Spreadsheet Core - our own spreadsheet calculation engine, created for xlCompiler project. Now you don't need Excel to open workbooks and work with xlCompare.
This approach give us ability to improve speed of the comparison and put focus of the application into the comparison job. The application was created for comparison only and it should done this job perfectly. Now we can implement any feature in the software - it is not limited by the options offered by Excel.
You can find commands and features in xlCompare, which are not possible in the Excel-based solution. This is the main argument, why the software is not Excel driven.