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Better Mobile Youtube aims to provide better user experience and feature for mobile youtube on firefox

for 3 seconds forward/backward (ad-skip is also supported)

Adds a download button to SoundCloud tracks

Astronomy Picture of the Day as a Popup in your Browser!

Avoid haram images & videos on the Internet.

Convert videos from nearly any format to a selection of modern, widely supported codecs.

Add's Twitfix related copy options to Twitter's video context menu

A minimalistic and comfortable UI for playing locally stored video files, supports loading directories as playlists

supplementary content in 1337x sites

Download videos and sounds from TikTok quickly without the watermark.

Load streaming sites videos in the lightweight native HTML5 player and block annoying popups.

Adds download button for subscription list in xml format.

Cling is your place for everything, where nothing ever gets lost. Combine your notes, bookmarks, media, and documents on well-structured and beautiful boards. Then, share your boards with others and start to collaborate. Cling is free.

Keyboard support for booru sites.

Allows FLV playback in browser without any other media players.

Create a playlist of web pages whether it is for music or videos or just to keep track of what you want to look at.

Restores the 'View Images' button when browsing images on Google Images.

Inverted advertising blocker.

Synchronized HTML video playback controlling using WebRTC.