Quanta - a web development IDE for KDE

Quanta is a web development IDE for KDE which comes as part of the kdewebdev package.

For those unaware, an IDE (integrated development environment) is a software application designed to provide all the tools you need in one place when you’re developing code. Quanta is, in my opinion, an excellent IDE for web development.

It focuses on being extensible, so that it plugs into the underlying KDE architecture to do certain tasks and allows integration with many other application to extend its capabilities

More Here