url-manager

Setup (for Ubuntu)

Download the url-manager file.
Open a terminal and change directory to the current file location.
Move the file to /opt/scripts/ with the following commands:

sudo mkdir /opt/scripts/

sudo mv url-manager /opt/scripts/

Go to Settings > Keyboard Shortcuts.
Create a Custom Shortcut with the following configuration:

Name:     url-manager
Command:  bash /opt/scripts/url-manager
Shortcut: Ctrl+u

You can now open url-manager by pressing Ctrl + u.

Instructions

Main Window

Button	Action
Quit	Quit URL Manager
Enter	Open URL
Edit	Edit Window

Edit Window

Button	Action
Back	Main Window
Remove	Remove selected URL
Add	Add Window

Add Window

Button	Action
Cancel	Edit Window
Ok	Add new URL