2.0 http://www.w3.org/2005/Atom Excel File Format Soluton for End Users & Developers – Excel File Merger API .NET C#https://products.aspose.com/cells/net/merger/Recent content in Excel File Merger ......supports Windows, Linux, MacOS, Azure, AWS Lambda. aboutfile Starts...supports Windows, Linux, MacOS, Azure, AWS Lambda. aboutfile Starts...