In HTML programming, building blocks of a page (paragraph, image, sound, ActiveX components...)
The basic components of a database application: forms, tables, queries, macros, reports and modules.
In programming terminology, a freestanding chunk of code that defines the properties of some thing. For example, this Netdictionary applet is an object that contains button objects, scrolling list objects, window objects, URL objects, definition objects, etc. Not all programming languages use this object model; the ones that do are said to be object-oriented.