[1] SmartUpdate Developer’s Guide (2015-05-01 23:37:04 +09:00 版) http://web.archive.org/web/20040404132747/http://developer.netscape.com/docs/manuals/communicator/jarman/index.htm

[2] Netscape Gecko and Plugins (Arun Ranganathan 著, 2004-09-03 04:50:09 +09:00 版) http://petesguide.com/xpi/Netscape%20Gecko%20and%20Plugins.htm

In Netscape Communicator 4.x browsers, the preferred mechanism for installing plugins was SmartUpdate, which involved signed JAR files (rather like signed CAB files in IE) and JavaScript as the installer-language. This delivery mechanism allowed plugins to be delivered dynamically to end-users, without necessitating a departure from the browser or without restarting the browser. But SmartUpdate is no longer supported in Netscape Gecko-based browsers. Instead, the technology that replaces it is XPInstall (also abbreviated as XPI and pronounced "zippy"). XPInstall is capable of doing everything SmartUpdate could do in Netscape Communicator 4.x