MB FileBrowser. Add file browsing capability to custom form and to CkEditor and TinyMCE html editors. Instant demo: open File Browser and doubleclick or rigth-click select on a file to choose it. Mar 27, · How to Open Other ASPX Files. The actual code in the ASPX file is processed by the web server and can be coded in any program that codes in yukijirushi-cheeseclub.com Microsoft's Visual Studio is one free program you can use to open and edit ASPX files. Another tool, although not free, is the popular Adobe Dreamweaver. Sometimes. For other types of files (most of the file types in the world) Gmail doesn't do this. It could, but the functionality isn't there right now. So, the only option left to you is to download the file from the Gmail server to your PC so that you can view it.