| Property/Method | Description |
| appCodeName | Represents the code name of the browser |
| appName | Refers to the official browser name |
| appVersion | Refers to the version information of the browser |
| javaEnabled() | Function that tests to see that Java is supported in the browser |
| language | Refers to the language of the browser |
| mimeTypes | Refers to an array of MimeType objects that contains all the MIME types that the browser supports |
| platform | A string representing the platform on which the browser is running |
| plugins | Refers to an array of Plugin objects that contains all the plug-ins installed in the browser |
| plugins.refresh() | Checks for any newly installed plug-ins |
| preference() | Allows reading and setting of various user preferences in the browser |
| taintEnabled() | Tests to see whether data-tainting is enabled |
| userAgent | String that represents the user-agent header |