Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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Autoprefixer
Parses your CSS and automatically adds vendor prefixes using real-world browser usage data from Can I Use.
postcss-import
A PostCSS plugin that inlines @import rules, merging split CSS files into one stylesheet before other plugins run.
cssnano
A modular CSS minifier built on the PostCSS ecosystem, composing dozens of swappable optimization plugins into safe, lite, and advanced presets.
postcss-preset-env
Converts tomorrow's CSS syntax into code today's browsers understand by auto-selecting PostCSS polyfill plugins from your browserslist targets.
postcss-simple-vars
A PostCSS plugin that brings Sass-like $variables to CSS values, selectors, at-rules, and comments.
postcss-flexbugs-fixes
A PostCSS plugin that automatically fixes common cross-browser Flexbox layout bugs.
ipykernel
The IPython kernel that lets Jupyter notebooks, JupyterLab, and other frontends run and interact with Python code.
IPython
A productive interactive Python shell with rich introspection, tab completion, and magic commands.
postcss-prefixwrap
A PostCSS plugin that wraps every CSS rule in a container selector to scope styles safely.
ipywidgets
Interactive HTML widgets for Jupyter notebooks
nbformat
Reference implementation of the Jupyter Notebook JSON format
nbconvert
Convert Jupyter notebooks to HTML, PDF, Markdown, and more
traitlets
A pure Python library that adds typed, validated, observable attributes to your classes, and the layered configuration system built on top of them.
PurgeCSS
Remove unused CSS selectors to dramatically shrink your stylesheet size.
jupyter_client
The reference implementation of the Jupyter messaging protocol, giving Python apps sync and async client/kernel-management APIs over ZeroMQ.