Merge pull request #2 from martinRenou/add_extensions

Add external and core extensions

Author: martinRenou

extensions.tpl

@@ -5,3 +5,32 @@ This a list of nice Jupyter Widgets libraries not part of ``jupyter-widgets-cont
 
 > Feel free to edit this page to add more information by clicking on **Edit on GitHub** in the
 > top right corner of this page.
+
+### Core Widgets Libraries
+
+- [ipywidgets](https://github.com/jupyter-widgets/ipywidgets) - Interactive widgets library for Jupyter notebooks.
+- [ipyleaflet](https://github.com/jupyter-widgets/ipyleaflet) - Interactive visualization library for Leaflet.js maps in Jupyter notebooks.
+- [midicontrols](https://github.com/jupyter-widgets/midicontrols) - A Jupyter widget for midi controllers.
+- [pythreejs](https://github.com/jupyter-widgets/pythreejs) - A Jupyter - Three.js bridge
+
+### Core Jupyter Widgets Tools
+
+- [widget-ts-cookiecutter](https://github.com/jupyter-widgets/widget-ts-cookiecutter) - Get started creating your own jupyter widgets library using TypeScript.
+- [widget-cookiecutter](https://github.com/jupyter-widgets/widget-cookiecutter) - Get started creating your own jupyter widgets library using JavaScript.
+
+### Core Tutorials
+
+- [tutorial](https://github.com/jupyter-widgets/tutorial) - Tutorials for widgets.
+
+### Widgets Libraries
+
+- [ipympl](https://github.com/matplotlib/ipympl): The Matplotlib interactive back-end for Jupyter, using ipywidgets.
+- [ipychart](https://github.com/nicohlr/ipychart) - Interactive Chart.js plots in Jupyter.
+- [ipycytoscape](https://github.com/cytoscape/ipycytoscape) - Widget for interactive graph visualization in Jupyter using cytoscape.js.
+- [ipydagred3](https://github.com/timkpaine/ipydagred3) - Library for drawing directed acyclic graphs in jupyterlab using dagre-d3.  <!--lint enable double-link-->
+- [ipyvizzu](https://github.com/vizzuhq/ipyvizzu) - Animated data storytelling tool.
+- [ipyvolume](https://github.com/widgetti/ipyvolume) - 3D plotting for Python in Jupyter based on widgets and WebGL.
+- [ipywebrtc](https://github.com/maartenbreddels/ipywebrtc) - Video/Audio streaming in Jupyter.
+- [ipyaggrid](https://github.com/widgetti/ipyaggrid) -  The power of ag-Grid in Jupyter.
+- [ipydatagrid](https://github.com/bloomberg/ipydatagrid) - Fast datagrid widget for Jupyter.
+- [ipyregulartable](https://github.com/jpmorganchase/ipyregulartable) - High performance, editable, stylable datagrids in Jupyter.