Bluefish is an extremely powerful text based HTML editor. Actually it is more than that. It also has support for over twenty other languages including C++, D, Java, PHP, Perl, Python, Ruby…well, the list goes on. What it does is make editing easy, especially for multi-document projects like a website.
To install Bluefish, open Konsole and type,
sudo apt install bluefish
Then enter your admin password and wait for the installation to finish.
After installing the program it can be opened by going to the Applications Menu and either and typing Bluefish or navigating to Applications/Development/Web Development.