Firefox extensions to make copy-paste a piece of cake in Firefox

CoLT

Allows copying of a single link with Title and URL as per given output template
Copy Link Text extension to firefox

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copyurlplus

Allows text selection, link selection with copy of title, url and selected text
copyurlplus which xpi version to install for different firefox versions
download copyurlplus xpi version 1.3.4 for firefox 3.6
notes on customizing copyurlplus by dmcritchie
Making a Firefox extension work in later versions of firefox
Making copyurlplus extension work in later versions of firefox firefox

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copyallurls

Allows copying of all open tabs (optionally with history and sorting) with Title, URL as per given output template
Copy all URLs from open tabs (optionally with history)