DotNetZip is a FAST, FREE class library and toolset for manipulating zip files. Use VB, C# or any .NET language to easily create, extract, or update zip files. DotNetZip is the best open-source ZIP ...
GroupDocs.Editor is a server-side document editing SDK for .NET, Java, Node.js, and Python that converts popular office formats to clean HTML for in-browser editing, then renders back to DOCX, XLSX, ...