The GroupDocs.Signature .Net SDK allows access to the GroupDocs.Signature .Net API. The API allows you to automate signing documents and add electronic signatures in your applications. Digitally sign Microsoft Word, Excel, PowerPoint and PDF documents. GroupDocs provides document manipulation APIs that allows you to view, convert, annotate, compare, sign, assemble and search documents in your applications.
Box has announced the general availability of the new Box View, an API service that allows Web and mobile applications to display nearly any file type without the need for a custom-built viewer. File types supported include text, image, presentation, 3D, video, and audio.