Do we have Aspose Viewer wich can display different types of documents for Angular
No, I am afraid we do not have any GUI to view the documents. Please note that Aspose Cloud APIs are UI independent back end APIs. However, you can try GroupDocs.Viewer REST API using Angular HttpClient to transform 50+ file formats to HTML, Image or PDF view. Later, you can use the output file to view documents in your dedicated viewer. The customer needs to develop or use any UI himself.