Here's the information from the (?) Icon I had previously mentioned in my comment.
Download the .deb file for the "open Desktop" application
This is a direct link
here.
The actual site is here:
Linux-apps
Then you click the "files" tab and download the .deb for your distribution. Once you open the .deb file your package manager (ubuntu software center) should open and allow you to install it.
If you would rather use ocs-url app
You can get it from here.
A direct-link for the deb file is here.
The Installation instructions also include a video of how to install ocs-url. That link is here
If you use Firefox, a program selection window open the first time you click on an install button. Choose "ocs-url" as custom url handler and tick "remember the file association".
So following instructions from the gnome-look.org help button next to the install button, follow the steps I just outlined to install the URL handler, once that is installed you can now use the "install" button on the gnome-look.org site.
Here's the information from the (?) Icon I had previously mentioned in my comment.
Download the .deb file for the "open Desktop" application This is a direct link here. The actual site is here: Linux-apps
Then you click the "files" tab and download the .deb for your distribution. Once you open the .deb file your package manager (ubuntu software center) should open and allow you to install it.
If you would rather use ocs-url app
You can get it from here. A direct-link for the deb file is here. The Installation instructions also include a video of how to install ocs-url. That link is here
So following instructions from the gnome-look.org help button next to the install button, follow the steps I just outlined to install the URL handler, once that is installed you can now use the "install" button on the gnome-look.org site.
I hope that helps.