With EPUBReader you can read ePub files just in Firefox. No additional software needed!
When you find something on the web that you want to view later, put it in Pocket. It automatically syncs to your phone, tablet or computer so you can view it at any time, even without an internet connection.
1) Capture an page or just a specific region.
2) Adds a right click option to take screen shots of an entire web page or just part of a web page to save as an image.
Show the likes and dislikes bar over every video thumbnail in YouTube so that you can know its rating before watching it.