Due to lack of time and interest, I'm no longer maintaining this project. Feel free to grab the sources from https://github.com/fabianp/nbgallery and fork the project.
TL;DR I created a gallery for IPython/Jupyter notebooks. Check it out :-)
A couple of months ago I put online a website that displays a collection of IPython/Jupyter notebooks. The is a website that collects user-submitted and publicly available notebooks and displays them with a nice screenshot. The great thing about this website compared to other similar efforts is that this one updates and categorizes the notebooks (by date and views) automatically. You can even search for anything in this database that contains already more than 400 notebooks!
Vision
I would like to make a website where it is possible to
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Find the notebook you are looking for. There is precious information (examples, documentation, tutorials, etc.) contained within IPython/Jupyter notebooks. It should be easy to find this information.
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Discover new notebooks. I would like to see new notebooks as they are submitted in order to discover new notebooks, possibly about new technologies that I did not know about.
How it works
Under the hood there's a django app, for which the source code lives here (don't hesitate to use the issues feature in github to suggest features or to report bugs). To propose new notebooks there's a tab where anyone can leave the URL of a notebook. If all goes right, the django app will take a screenshot will be taken and incorporated into the database. The only non-trivial part of this process is to take the screenshot, for which I use a bit of javascript around phantomjs.
Future plans
What you see is just the beginning!. As time permits I would like to implement user authentication so that registered users can bookmark their favorite notebooks, up and down-vote notebooks etc. Cathegorization of notebooks (e.g. in bins such as Math, Phisics, Machine Learning, R, Python, Julia, etc.) is also high on my list. Leave me a comment if you would like to see some specific feature!