Extensible and application-adaptable toolbar for web services

Providing a user interface (UI) on a web page. A toolbar section is defined on the web page. The web page includes a content section being different and separate from the toolbar section, and the content section displays additional content of the web page. One or more groups are specified to include one or more action controls associated therewith. Each of the specified groups has a group identifier associated therewith. The one or more action controls are displayed according to the specified groups in the toolbar section of the web page. Each of the one or more displayed action controls includes properties associated therewith, and the included properties define at least one of the following: a name of the action control, a link of the action control, the group identifier of the action control, and a classification identifier of the action control.