GTK3+ APT SOURCES EDITOR
A graphical tool to manage /etc/apt/sources.list
Clone the repo: git clone https://github.com/davix3f/gtk-apt-sources-editor && git checkout dev, then make your choice.
Option one: automated installation
Download install.py from master/ and run it with sudo python3 install.py
All-in-one terminal command: wget https://raw.githubusercontent.com/davix3f/gASE/master/install.py && sudo python3 install.py
If you want, you can keep this install script. It will be updated with "update" functionality.
Option two: execute from the source code
In dev/src folder: python3 main.py
Option three: build binary package
Wondering how? Here's the guide