URL MultiCopy allows saving of links multiple times from multiple locations and then pasting all to the Clipboard. It does not interfere with normal copy/paste functions until data is saved to clipboard. Note: All functions of URL MultiCopy (and more) has been incorporated into FoxyLink. You can try whichever one you prefer. Note: None of my extensions contain any tracking, advertising or privacy infringement. Features

Multi Process Compatible (v2.0+)
Works on any site or local files opened by the browser
Works with Text URLs, Hyperlinks and Right-Clicked single links
Grabs URLs from mixed text & Hyperlinks (exact selection not necessary) You can even do a select all (Ctrl + a) to grab all links of a page.
Restarting Firefox or computer does not affect the saved data
Context menu accesskey (u) and keyboard shortcut (Ctrl +shift +F7) (not included in v2.0)
Context menu is disabled when not active (instead of hidden)
Link filtering/removal of relative URLs
Removes duplicate URLs
Sorts URLs alphabetically
Pop-up notification on adding links plus the total saved, and on pasting to clipboard
Localization (en-US for now until more are provided)
Option to paste into Textarea added (v1.1)
Added processing of text selection inside a Textarea (v1.2)

Compatibility This addon is developed and tested on Firefox/Windows. Please let me know how it does on other versions, platforms and applications.