GNOME Builder is described as 'Builder is an actively developed Integrated Development Environment for GNOME. It combines integrated support for essential GNOME technologies such as GTK+, GLib, and GNOME APIs with features that any developer will appreciate, like syntax highlighting and snippets' and is a Code Editor in the development category. There are more than 50 alternatives to GNOME Builder for a variety of platforms, including Windows, Linux, Mac, BSD and Flathub apps. The best GNOME Builder alternative is Notepad++, which is both free and Open Source. Other great apps like GNOME Builder are Visual Studio Code, Sublime Text, VSCodium and Vim.