Opera Software
  1. Toolbars
  2. Menus
  3. Panels
  4. Speed Dial
  5. Bookmarks
  6. Widgets
  7. Notes
  8. Content Blocking
  9. Fraud Protection
  10. BitTorrent
  11. Display Modes
  12. Developer Tools
  13. Preferences
  14. Advanced Preferences
  15. Skins
  16. Keyboard Shortcuts
  17. Using the Mouse
  18. E-mail and News
  19. Newsfeeds
  20. Chat
  21. Dialogs
  22. Backing Up Opera

Programs

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Choose which programs Opera should use to handle specific protocols.

Protocol Manager

You can create your own list of programs to launch when executing particular protocols in Opera. The default list includes:

Protocol Purpose
mailto Choose which application Opera should use for e-mail; Opera's own built-in client, the default e-mail client on your computer, or a specific other e-mail client.
telnet Communicate with other computers through a command-line interface.
tn3270 For communication with IBM mainframes. See IETF RFC 1576 for specifications.

Source Viewer

The source viewer is the program you want to launch when you select View > Source or press Ctrl+F3 to see the source of a Web page.

By default, Opera will use its own built-in source viewer.