Jupyter dev here. FYI, we're currently working on building a new Jupyter web interface that resembles a more classic IDE experience, which we are calling JupyterLab. A first version is progressively coming together, and is planned to have code editor and terminal components. We also plan to have a notebook component, like the current notebook, in a later version. Our in-progress work is spread across many repos currently (see the various jupyter/jupyter-js-* repos on github).