FoxScroller от Simalleus

This addon gives you a button and hotkeys to continuously scroll down a website. Multiple websites can be scrolling at the same time.
Note: Does not work on "addons.mozilla.org".

How to use
Start/Stop:
Click the addon button in the addon bar to start scrolling. The scrolling will stop, if the button is pressed again or the end of the page is reached. Direction can be changed by right-clicking on the addon button.

Speed:
To adjust the scrolling speed right-click on the addon button, click on "Set speed" and enter the speed or go to the options page. The unit is pixel per seconds.

Options:
To open the options right-click on the addon button and choose "Options".

• Speed in pixel per seconds.
• Action at end of page: Nothing/Toggle direction/Stop. (Default: Stop)
• Delay at end of scrolling in seconds. (Default: 0s)
• Keep scrolling on page change or reload. (Default: deactivated)
• Start scrolling automatically. (Default: deactivated)
• Keep scrolling tabs in the background. (Default: deactivated)
• Enable or disable hotkeys. (Default: deactivated)

Hotkeys:
Hotkeys are composed of an arbitrary amount of modifier keys (Alt, Shift, Ctrl, Cmd) and one additional key.

• Toggle scrolling. (Default: Alt+e)
• Toggle direction. (Default: Alt+r)
• Set speed. (Default: Alt+w)

Note: Does not work on "addons.mozilla.org".