Tabloc by asukaze

This add-on adds "Lock Tab" button. When you click links while the tab is locked, the link will be opened in a new tab instead of the current tab.

You can customize following behaviors:

• Open tabs in background or foreground.
• Position of the new tab (next to current tab or rightmost).
• Exclude in-page links and/or forms.
• Automatically lock tabs with specified URLs.
• "Lock Tab" button icons.