Syncfusion XlsIO has been invaluable for several of our clients that use Excel forms as their primary means of data input. XlsIO enables us to easily extract data for expanded manipulation and analysis in our clients' .NET applications. Further, the intuitive XlsIO API has allowed us to spend our time on application development, rather than a component learning-curve. I would highly recommend Syncfusion XlsIO to anyone that needs to use Excel within a .NET environment.