3 найбільш популярні індикатори прогресу AJAX запита:
1. AJAX loading indicator like GMail
http://weblogs.asp.net/lduveau/archive/2007/05/25/ajax-loading-indicator-like-gmail.aspx
http://mattberseth.com/blog/2007/06/aspnet_ajax_rendering_a_gmaill.html
2. ModalPopup as an AJAX Progress Indicator
http://mattberseth.com/blog/2007/07/modalpopup_as_an_ajax_progress.html
3. YUI Style AJAX Progress Indicator
http://mattberseth.com/blog/2007/10/yui_style_ajax_progress_indica.html
