| [itsdangerous](https://pypi.python.org/pypi/itsdangerous) | Various helpers to pass trusted data to untrusted environments and back. |
| [itsdangerous](https://pypi.python.org/pypi/itsdangerous) | Various helpers to pass trusted data to untrusted environments and back. |
| [Jinja2](https://pypi.python.org/pypi/jinja) | A small but fast and easy to use stand-alone template engine written in pure python. |
| [Jinja2](https://pypi.python.org/pypi/jinja) | A small but fast and easy to use stand-alone template engine written in pure python. |
| [lxml](http://lxml.de/) | The lxml XML toolkit is a Pythonic binding for the C libraries libxml2 and libxslt. |
| [lxml](http://lxml.de/) | The lxml XML toolkit is a Pythonic binding for the C libraries libxml2 and libxslt. |
| [Mako](http://www.makotemplates.org) | A super-fast templating language that borrows the best ideas from the existing templating languages |
| [MarkupSafe](https://pypi.python.org/pypi/markupsafe) | Implements a XML/HTML/XHTML Markup safe string for Python. |
| [MarkupSafe](https://pypi.python.org/pypi/markupsafe) | Implements a XML/HTML/XHTML Markup safe string for Python. |
| [matplotlib](http://matplotlib.org) | matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. matplotlib can be used in python scripts, the python and ipython shell, web application servers, and six graphical user interface toolkits. |
| [matplotlib](http://matplotlib.org) | matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. matplotlib can be used in python scripts, the python and ipython shell, web application servers, and six graphical user interface toolkits. |
| [Mercurial](http://mercurial.selenic.com/) | Mercurial is a free, distributed source control management tool. It efficiently handles projects of any size and offers an easy and intuitive interface. |
| [Mercurial](http://mercurial.selenic.com/) | Mercurial is a free, distributed source control management tool. It efficiently handles projects of any size and offers an easy and intuitive interface. |