Extensions I recommend and can be used by the majority of users who take a few moments to get used to new extensions
Provides options to 'Copy Urls of All Opened Tabs in Current Window', 'Copy Urls of Tabs in All Windows', 'Copy Urls of All Links in Selected Text' and 'Copy Urls of All Images in Selection'. Allows to open multiple tabs.
High quality TTS screen reader with automatic language recognition. Voice speed control. Integrated interface (compact & extended). Supports English, Spanish, German, Italian, French, Russian. Select text to speak it. (TTS: Text-To-Speech)
Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)
Copy selected or all links URLs to clipboard. Multi-process (E10S) compatible.
Attention! Alpha version! Do not use as a replacement for ScrapBook Plus 1!
Save web pages and organize them.
Right-click selected text to copy the URL of any links it contains.
A light-weight (pseudo) rules-engine to easily modify HTTP headers in either direction
This addon enhances all the tooltips in Firefox. DOWNLOAD the new Firefox 4.0-compatible version there: https://addons.mozilla.org/firefox/addon/7314/contribute/roadblock/?src=version-history&version=3.0.20110409 :)
Multiple tab selection to copy multiple URLs to clipboard at once.
Press shift and click on the tab you want to select, it will copy urls of selected tabs to your clipboard.
To copy all tabs at once, press SHIFT + ALT + A.