XPCOM Interfaces
Mozilla includes many XPCOM components and interfaces, which are categorized here. This reference is for Mozilla 1.8 which is used by Firefox 1.5 and Thunderbird 1.5.
Core
| Base Types | Data Structures | Enumerations |
| Component Management | XPCOM | |
| Files | Streams |
User Interface
| Auto Complete | Clipboard | Drag and Drop |
| Selection | Transactions | XUL |
Application Development
| Application Info | Preferences | Spell Checking |
| Command Lines | Profiles | RDF |
| Extensions and Update | Web Browser | XML |
| Window Management | History | XML Schema |
Network
| Base Network | About Handlers | Cache |
| Channels | Cookies | Download and Content Handling |
| Protocol Handlers | Sockets | Stream Converters | Proxies | Web Services | ZIP and JAR Files |
| Network Utilities |
DOM
| W3C DOM | DOM Level 3 | DOM HTML |
| DOM SVG | DOM XUL | Mozilla Specific DOM |
| General Mail | Mail Storage | POP3 |
| IMAP | MailUI | Message Composition and Sending |
| Searching Messages | Mail Import | Address Book |
| News | LDAP |
Mozilla Applications
| Browser | Form fill-in | DOM Inspector |
| Editor | JavaScript Debugger |
Other Components
| Accessibility | Security and Privacy | Docshell and Content Viewers |
| Content and Layout | Graphics and Widgets | Images |
| JavaScript | Localization | Plugins |
| XPInstall |
Interfaces that do not have a corresponding IDL file are not included. In the listings, all components begin with an @ sign, whereas interfaces do not.
Reference documentation is generated from Mozilla's source.