Without this dialog, when we want to install an extension we need to search it from the webpage, download and install it using the Extension Manager. With this dialog, we can now get and install extensions with one-click. This dialog is appropriate for searching and installing not only general extensions but also other types of extensions such as templates, macros, icons, etc. The main purpose of creating this dialog is to improve user experience. Therefore, nearly every detail of the extensions exist in the user interface. This simplicity is designed and created thanks to the web API, power of extension manager, and additions dialog.