Screen capture and annotation applications

I found two useful web browser extensions for screen shot capture and annotation.
Both browser extensions are work fine with Mozilla Firefox and Google Chrome.

Following are the links,

Easy Screen Shot

Awesome Screenshot

Fireshot

Aviary

Rotate wallpapers using Webilder

Webilder is a wallpaper management tool. Using Webilder you can change wallpaper in specific intervals and it automatically download wallpapers from web.


Installation

Goto Webilder home page and download deb file.
Install using Gdebi Package Installer.

Right-click on the GNOME panel, choose "Add to panel", and select "Webilder Webshots Applet".