It is very light weight and you can easily open 500+ documents simultaneously with out any problem. It comes with search and replace, open files recursively, snippets sidebar, spell checker, auto-recovery of changes, In-line reference information, code block folding, auto-completion and more.
Install Bluefish on Ubuntu Linux
Open the terminal application (ctrl+alt+t) and run below Bluefish code editor installation command.
sudo apt update
sudo apt install bluefish
Install Bluefish editor via Flatpak
Bluefish also available via flatpak. First your need to install flatpak and flathub on your Ubuntu Linux system and restart it. Then in terminal app run below Bluefish flatpak installation command.
flatpak install flathub nl.openoffice.bluefish
After the installation you can start it via
flatpak run nl.openoffice.bluefish
and uninstall it via
sudo flatpak uninstall nl.openoffice.bluefish