Hello Colin,
It appears that the free solution you've referred to is completely different from our product.
jExcel is a very light jquery plugin to embed a spreadsheet, compatible with Excel, in your browser.
So, here is a brief list of the most notable differences:
- The supported programming language for the free solution is JavaScript, not Java;
- The free solution does not communicate with the Microsoft Excel Application and does not require it to be installed;
- This free solution supports JSON and CSV data, and does not support XLS or XLSX.
Could you please share more details about your project and the challenges you face? We could see and recommend if our solution can be an option for you.