Software Embedded in UCSF ChimeraX

UCSF ChimeraX is built upon other great software. This information was generated from ChimeraX 1.12.dev202602070521 for Linux on 2026-02-07 05:21:14 UTC.

Included Software

Python version PYTHON_VERSION
“The Python programming language and interpreter.”
History and License: open source

ChimeraX is distributed as Python packages, either written in the Python language or as a binary package written in C or C++.

Rotamer libraries (amino acid sidechain conformations and associated information) from the following sources:

FFmpeg version 7.0.2-static
“A complete, cross-platform solution to record, convert and stream audio and video.”
License: GNU General Public License v3
Embedded licenses: FFmpeg embedded licences

FFmpeg is bundled as a convenience for users of ChimeraX. It is a separate product, and thus, its license does not affect ChimeraX's license. FFmpeg can be freely redistributed separately from ChimeraX. See the GPL FAQ for more details. It can be found in the bin directory.

Minicons Free Vector Icons Pack (downloaded 28 November 2016)
The Minicons Free Vector Icon Pack is a free set of scalable icons.
License type: Creative Commons Abbtributions 3.0 Unported

Linux only.

BasicProperty (and BasicTypes) for Python (downloaded 15 February 2018)
The flatten function in basictypes/latebind.py is the basis for our chimerax.core.utils.flattened function. The Python packages are not included.
License type: BSD license

cpp-peglib (downloaded 9 July 2024)
The cpp-peglib library was written by Yuji Hirose and is used in ChimeraX to parse command-line specifiers.
License type: MIT license

AmberTools
Certain executables from the AmberTools package are included with ChimeraX in order to compute partial charges. These executables are unmodified relative to their AmberTools versions, and are communicated with via their normal inputs and outputs.
License: Most of AmberTools is covered under the GNU Public License v3.

Included Python Packages

For convenience, the ChimeraX distribution includes the Python packages that it depends on. Both the direct and indirect dependencies are shown below. The package names are links to the home page of the corresponding Python package. The license type is shown, and if a license is bundled with the package, a link to it is provided. Note: this list is automatically generated.

Packages: aiohappyeyeballs, aiohttp, aiosignal, alabaster, annotated-types, anyio, appdirs, asttokens, attrs, babel, beautifulsoup4, blockdiag, blosc2, build, certifi, cftime, charset-normalizer, click, colorama, comm, contourpy, coverage, cxservices, cycler, Cython, debugpy, decorator, distro, docutils, executing, filelock, fonttools, frozenlist, funcparserlib, glfw, grako, h11, h5py, html2text, httpcore, httpx, httpx-sse, idna, ihm, imagecodecs, imagesize, iniconfig, ipykernel, ipython, ipython_pygments_lexers, ipywidgets, jedi, Jinja2, jsonschema, jsonschema-specifications, jupyter_client, jupyter_core, jupyterlab_widgets, kiwisolver, line_profiler, lxml, lz4, Markdown, MarkupSafe, matplotlib, matplotlib-inline, mcp, msgpack, multidict, ndindex, nest-asyncio, netCDF4, networkx, nibabel, nptyping, numexpr, numpy, nvidia-nvjitlink-cu12, OpenMM, OpenMM-CUDA-12, openvr, packaging, ParmEd, parso, pep517, pexpect, pickleshare, pillow, pip, pkginfo, platformdirs, pluggy, prompt_toolkit, propcache, psutil, ptyprocess, pure_eval, py-cpuinfo, pybind11, pycollada, pydantic, pydantic-settings, pydantic_core, pydicom, Pygments, pynmrstar, pynrrd, PyOpenGL, PyOpenGL-accelerate, pyopenxr, pyparsing, pyproject_hooks, PyQt6-commercial, PyQt6-Qt6, PyQt6-WebEngine-commercial, PyQt6-WebEngine-Qt6, PyQt6_sip, pytest, pytest-cov, python-dateutil, python-dotenv, python-multipart, pyzmq, qtconsole, QtPy, qtshim, RandomWords, referencing, requests, roman-numerals, rpds-py, scipy, setuptools, sfftk-rw, six, snowballstemmer, sortedcontainers, soupsieve, Sphinx, sphinx-autodoc-typehints, sphinxcontrib-applehelp, sphinxcontrib-blockdiag, sphinxcontrib-devhelp, sphinxcontrib-htmlhelp, sphinxcontrib-jsmath, sphinxcontrib-qthelp, sphinxcontrib-serializinghtml, sse-starlette, stack-data, starlette, superqt, tables, tcia_utils, tifffile, tinyarray, tornado, traitlets, typing-inspection, typing_extensions, urllib3, uvicorn, wcwidth, webcolors, wheel, wheel-filename, widgetsnbextension, yarl.

aiohappyeyeballs version 2.6.1
Synopsis: Happy Eyeballs for asyncio
License type: Python Software Foundation License
License: aiohappyeyeballs license
aiohttp version 3.13.1
Synopsis: Async http client/server framework (asyncio)
License type: Apache-2.0 AND MIT
License: aiohttp license
aiosignal version 1.4.0
Synopsis: aiosignal: a list of registered asynchronous callbacks
License type: Apache Software License
License: aiosignal license
alabaster version 1.0.0
Synopsis: A light, configurable Sphinx theme
License type: BSD License
License: alabaster license
annotated-types version 0.7.0
Synopsis: Reusable constraint types to use with typing.Annotated
License type: MIT License
License: annotated-types license
anyio version 4.12.1
Synopsis: High-level concurrency and networking framework on top of asyncio or Trio
appdirs version 1.4.4
Synopsis: A small Python module for determining appropriate platform-specific dirs, e.g. a "user data dir".
License type: MIT License
License: appdirs license
asttokens version 3.0.1
Synopsis: Annotate AST trees with source code positions
License type: Apache 2.0
License: asttokens license
attrs version 25.4.0
Synopsis: Classes Without Boilerplate
babel version 2.18.0
Synopsis: Internationalization utilities
License type: BSD License
License: babel license
beautifulsoup4 version 4.13.5
Synopsis: Screen-scraping library
License type: MIT License
License: beautifulsoup4 license
blockdiag version 3.0.0
Synopsis: blockdiag generates block-diagram image from text
License type: Apache Software License
License: blockdiag license
blosc2 version 4.0.0
Synopsis: A fast & compressed ndarray library with a flexible compute engine.
build version 1.3.0
Synopsis: A simple, correct Python build frontend
certifi version 2026.1.4
Synopsis: Python package for providing Mozilla's CA Bundle.
License type: Mozilla Public License 2.0 (MPL 2.0)
License: certifi license
cftime version 1.6.5
Synopsis: Time-handling functionality from netcdf4-python
charset-normalizer version 3.4.4
Synopsis: The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet.
License type: MIT
License: charset-normalizer license
click version 8.3.1
Synopsis: Composable command line interface toolkit
colorama version 0.4.6
Synopsis: Cross-platform colored terminal text.
License type: BSD License
License: colorama license
comm version 0.2.3
Synopsis: Jupyter Python Comm implementation, for usage in ipykernel, xeus-python etc.
License type: BSD License
License: comm license
contourpy version 1.3.3
Synopsis: Python library for calculating contours of 2D quadrilateral grids
License type: BSD License
License: contourpy license
coverage version 7.13.3
Synopsis: Code coverage measurement for Python
License type: Apache-2.0
License: coverage license
cxservices version 1.2.3
Synopsis: RBVI ChimeraX Web Services
cycler version 0.12.1
Synopsis: Composable style cycles
License type: BSD License
License: cycler license
Cython version 3.1.4
Synopsis: The Cython compiler for writing C extensions in the Python language.
License type: Apache Software License
License: Cython license
debugpy version 1.8.20
Synopsis: An implementation of the Debug Adapter Protocol for Python
License type: MIT License
License: debugpy license
decorator version 5.2.1
Synopsis: Decorators for Humans
License type: BSD License
License: decorator license
distro version 1.9.0
Synopsis: Distro - an OS platform information API
License type: Apache Software License
License: distro license
docutils version 0.21.2
Synopsis: Docutils -- Python Documentation Utilities
License type: Public Domain, Python Software Foundation License, BSD License, GNU General Public License (GPL)
License: docutils license
executing version 2.2.1
Synopsis: Get the currently executing AST node of a frame, and other information
License type: MIT License
License: executing license
filelock version 3.19.1
Synopsis: A platform independent file lock.
License type: The Unlicense (Unlicense)
License: filelock license
fonttools version 4.61.1
Synopsis: Tools to manipulate font files
License type: MIT
License: fonttools license
frozenlist version 1.8.0
Synopsis: A list-like structure which implements collections.abc.MutableSequence
License type: Apache-2.0
License: frozenlist license
funcparserlib version 2.0.0a0
Synopsis: Recursive descent parsing library based on functional combinators
License type: MIT License
License: funcparserlib license
glfw version 2.10.0
Synopsis: A ctypes-based wrapper for GLFW3.
License type: MIT License
License: glfw license
grako version 3.16.5
Synopsis: Grako (for "grammar compiler") takes a grammar in a variation of EBNF as input, and outputs a memoizing PEG/Packrat parser in Python.
License type: BSD License
License: grako license
h11 version 0.16.0
Synopsis: A pure-Python, bring-your-own-I/O implementation of HTTP/1.1
License type: MIT License
License: h11 license
h5py version 3.15.1
Synopsis: Read and write HDF5 files from Python
html2text version 2025.4.15
Synopsis: Turn HTML into equivalent Markdown-structured text.
httpcore version 1.0.9
Synopsis: A minimal low-level HTTP client.
License type: BSD License
License: httpcore license
httpx version 0.28.1
Synopsis: The next generation HTTP client.
License type: BSD License
License: httpx license
httpx-sse version 0.4.3
Synopsis: Consume Server-Sent Event (SSE) messages with HTTPX.
License type: MIT
License: httpx-sse license
idna version 3.11
Synopsis: Internationalized Domain Names in Applications (IDNA)
ihm version 2.2
Synopsis: Package for handling IHM mmCIF and BinaryCIF files
License type: MIT License
License: ihm license
imagecodecs version 2024.6.1
Synopsis: Image transformation, compression, and decompression codecs
License type: BSD License
License: imagecodecs license
imagesize version 1.4.1
Synopsis: Getting image size from png/jpeg/jpeg2000/gif file
License type: MIT License
License: imagesize license
iniconfig version 2.3.0
Synopsis: brain-dead simple config-ini parsing
ipykernel version 7.1.0
Synopsis: IPython Kernel for Jupyter
ipython version 9.9.0
Synopsis: IPython: Productive Interactive Computing
ipython_pygments_lexers version 1.1.1
Synopsis: Defines a variety of Pygments lexers for highlighting IPython code.
License type: BSD License
License: ipython_pygments_lexers license
ipywidgets version 8.1.8
Synopsis: Jupyter interactive widgets
License type: BSD License
License: ipywidgets license
jedi version 0.19.2
Synopsis: An autocompletion tool for Python that can be used for text editors.
License type: MIT License
License: jedi license
Jinja2 version 3.1.6
Synopsis: A very fast and expressive template engine.
License type: BSD License
License: Jinja2 license
jsonschema version 4.26.0
Synopsis: An implementation of JSON Schema validation for Python
jsonschema-specifications version 2025.9.1
Synopsis: The JSON Schema meta-schemas and vocabularies, exposed as a Registry
jupyter_client version 8.8.0
Synopsis: Jupyter protocol implementation and client libraries
License type: BSD License
License: jupyter_client license
jupyter_core version 5.9.1
Synopsis: Jupyter core package. A base package on which Jupyter projects rely.
jupyterlab_widgets version 3.0.16
Synopsis: Jupyter interactive widgets for JupyterLab
License type: BSD License
License: jupyterlab_widgets license
kiwisolver version 1.4.9
Synopsis: A fast implementation of the Cassowary constraint solver
License type: BSD License
License: kiwisolver license
line_profiler version 5.0.0
Synopsis: Line-by-line profiler
License type: BSD License
License: line_profiler license
lxml version 6.0.2
Synopsis: Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.
License type: BSD-3-Clause
License: lxml license
lz4 version 4.3.2
Synopsis: LZ4 Bindings for Python
License type: BSD License
License: lz4 license
Markdown version 3.8.2
Synopsis: Python implementation of John Gruber's Markdown.
MarkupSafe version 3.0.3
Synopsis: Safely add untrusted strings to HTML/XML markup.
matplotlib version 3.10.7
Synopsis: Python plotting package
License type: Python Software Foundation License
License: matplotlib license
matplotlib-inline version 0.2.1
Synopsis: Inline Matplotlib backend for Jupyter
mcp version 1.18.0
Synopsis: Model Context Protocol SDK
License type: MIT License
License: mcp license
msgpack version 1.1.1
Synopsis: MessagePack serializer
License type: Apache 2.0
License: msgpack license
multidict version 6.7.1
Synopsis: multidict implementation
License type: Apache License 2.0
License: multidict license
ndindex version 1.10.1
Synopsis: A Python library for manipulating indices of ndarrays.
License type: MIT
License: ndindex license
nest-asyncio version 1.6.0
Synopsis: Patch asyncio to allow nested event loops
License type: BSD License
License: nest-asyncio license
netCDF4 version 1.6.5
Synopsis: Provides an object-oriented python interface to the netCDF version 4 library
License type: MIT License
License: netCDF4 license
networkx version 3.3
Synopsis: Python package for creating and manipulating graphs and networks
License type: BSD License
License: networkx license
nibabel version 5.2.0
Synopsis: Access a multitude of neuroimaging data formats
License type: MIT License
License: nibabel license
nptyping version 2.5.0
Synopsis: Type hints for NumPy.
License type: MIT License
License: nptyping license
numexpr version 2.14.1
Synopsis: Fast numerical expression evaluator for NumPy
numpy version 1.26.4
Synopsis: Fundamental package for array computing in Python
License type: BSD License
License: numpy license
nvidia-nvjitlink-cu12 version 12.9.86
Synopsis: Nvidia JIT LTO Library
License type: Other/Proprietary License
OpenMM version 8.4.0
Synopsis: Python wrapper for OpenMM (a C++ MD package)
License type: Python Software Foundation License (BSD-like)
OpenMM-CUDA-12 version 8.4.0
Synopsis: CUDA platform for OpenMM
openvr version 1.26.701
Synopsis: Unofficial python bindings for Valve OpenVR SDK
License type: BSD License
License: openvr license
packaging version 25.0
Synopsis: Core utilities for Python packages
License type: Apache Software License, BSD License
License: packaging license
ParmEd version 4.2.2
Synopsis: Inter-package toolkit for molecular mechanical simulations
License type: LGPL
parso version 0.8.5
Synopsis: A Python Parser
License type: MIT License
License: parso license
pep517 version 0.13.1
Synopsis: Wrappers to build Python packages using PEP 517 hooks
License type: MIT License
License: pep517 license
pexpect version 4.9.0
Synopsis: Pexpect allows easy control of interactive console applications.
License type: ISC License (ISCL)
License: pexpect license
pickleshare version 0.7.5
Synopsis: Tiny 'shelve'-like database with concurrency support
License type: MIT License
pillow version 11.3.0
Synopsis: Python Imaging Library (Fork)
pip version 25.2
Synopsis: The PyPA recommended tool for installing Python packages.
pkginfo version 1.12.1.2
Synopsis: Query metadata from sdists / bdists / installed packages.
License type: MIT License
License: pkginfo license
platformdirs version 4.5.1
Synopsis: A small Python package for determining appropriate platform-specific dirs, e.g. a `user data dir`.
License type: MIT License
License: platformdirs license
pluggy version 1.6.0
Synopsis: plugin and hook calling mechanisms for python
License type: MIT License
License: pluggy license
prompt_toolkit version 3.0.52
Synopsis: Library for building powerful interactive command lines in Python
License type: BSD License
License: prompt_toolkit license
propcache version 0.4.1
Synopsis: Accelerated property cache
License type: Apache Software License
License: propcache license
psutil version 7.0.0
Synopsis: Cross-platform lib for process and system monitoring in Python. NOTE: the syntax of this script MUST be kept compatible with Python 2.7.
License type: BSD License
License: psutil license
ptyprocess version 0.7.0
Synopsis: Run a subprocess in a pseudo terminal
License type: ISC License (ISCL)
License: ptyprocess license
pure_eval version 0.2.3
Synopsis: Safely evaluate AST nodes without side effects
License type: MIT License
License: pure_eval license
py-cpuinfo version 9.0.0
Synopsis: Get CPU info with pure Python
License type: MIT License
License: py-cpuinfo license
pybind11 version 3.0.1
Synopsis: Seamless operability between C++11 and Python
pycollada version 0.8
Synopsis: python library for reading and writing collada documents
License type: BSD
License: pycollada license
pydantic version 2.12.5
Synopsis: Data validation using Python type hints
pydantic-settings version 2.12.0
Synopsis: Settings management using Pydantic
License type: MIT License
License: pydantic-settings license
pydantic_core version 2.41.5
Synopsis: Core functionality for Pydantic validation and serialization
pydicom version 2.4.4
Synopsis: A pure Python package for reading and writing DICOM data
License type: MIT License
License: pydicom license
Pygments version 2.18.0
Synopsis: Pygments is a syntax highlighting package written in Python.
License type: BSD License
License: Pygments license
pynmrstar version 3.5.0
Synopsis: PyNMR-STAR provides tools for reading, writing, modifying, and interacting with NMR-STAR files. Maintained by the BMRB.
License type: MIT License
License: pynmrstar license
pynrrd version 1.0.0
Synopsis: Pure python module for reading and writing NRRD files.
License type: MIT License
License: pynrrd license
PyOpenGL version 3.1.10
Synopsis: Standard OpenGL bindings for Python
License type: BSD License
PyOpenGL-accelerate version 3.1.10
Synopsis: Cython-coded accelerators for PyOpenGL
License type: BSD License
pyopenxr version 1.1.4501
Synopsis: Unofficial python bindings for OpenXR VR/AP device access
License type: Apache Software License
License: pyopenxr license
pyparsing version 3.3.2
Synopsis: pyparsing - Classes and methods to define and execute parsing grammars
pyproject_hooks version 1.2.0
Synopsis: Wrappers to call pyproject.toml-based build backend hooks.
License type: MIT License
License: pyproject_hooks license
PyQt6-commercial version 6.10.2
Synopsis: Python bindings for the Qt cross platform application toolkit
PyQt6-Qt6 version 6.10.1
Synopsis: The subset of a Qt installation needed by PyQt6.
License type: LGPL v3
License: PyQt6-Qt6 license
PyQt6-WebEngine-commercial version 6.10.0
Synopsis: Python bindings for the Qt WebEngine framework
PyQt6-WebEngine-Qt6 version 6.10.1
Synopsis: The subset of a Qt installation needed by PyQt6-WebEngine.
License type: LGPL v3
License: PyQt6-WebEngine-Qt6 license
PyQt6_sip version 13.10.3
Synopsis: The sip module support for PyQt6
License type: BSD-2-Clause
License: PyQt6_sip license
pytest version 9.0.2
Synopsis: pytest: simple powerful testing with Python
pytest-cov version 7.0.0
Synopsis: Pytest plugin for measuring coverage.
License type: MIT License
License: pytest-cov license
python-dateutil version 2.9.0.post0
Synopsis: Extensions to the standard Python datetime module
License type: BSD License, Apache Software License
License: python-dateutil license
python-dotenv version 1.2.1
Synopsis: Read key-value pairs from a .env file and set them as environment variables
python-multipart version 0.0.22
Synopsis: A streaming multipart parser for Python
License type: Apache Software License
License: python-multipart license
pyzmq version 27.1.0
Synopsis: Python bindings for 0MQ
License type: BSD License
License: pyzmq license
qtconsole version 5.7.0
Synopsis: Jupyter Qt console
License type: BSD License
License: qtconsole license
QtPy version 2.4.3
Synopsis: Provides an abstraction layer on top of the various Qt bindings (PyQt5/6 and PySide2/6).
License type: MIT License
License: QtPy license
qtshim version 1.2.1
Synopsis: Qt shim that handles PyQt5/6 and PySide2/6
License type: Free for non-commercial use
RandomWords version 0.4.0
Synopsis: A useful module for a random text, e-mails and lorem ipsum.
License type: MIT License
License: RandomWords license
referencing version 0.37.0
Synopsis: JSON Referencing + Python
requests version 2.32.5
Synopsis: Python HTTP for Humans.
License type: Apache Software License
License: requests license
roman-numerals version 4.1.0
Synopsis: Manipulate well-formed Roman numerals
rpds-py version 0.30.0
Synopsis: Python bindings to Rust's persistent data structures (rpds)
scipy version 1.14.0
Synopsis: Fundamental algorithms for scientific computing in Python
License type: BSD License
License: scipy license
setuptools version 80.9.0
Synopsis: Easily download, build, install, upgrade, and uninstall Python packages
sfftk-rw version 0.8.1
Synopsis: Toolkit for reading and writing EMDB-SFF files
License type: Apache Software License
License: sfftk-rw license
six version 1.17.0
Synopsis: Python 2 and 3 compatibility utilities
License type: MIT License
License: six license
snowballstemmer version 3.0.1
Synopsis: This package provides 32 stemmers for 30 languages generated from Snowball algorithms.
License type: BSD License
License: snowballstemmer license
sortedcontainers version 2.4.0
Synopsis: Sorted Containers -- Sorted List, Sorted Dict, Sorted Set
License type: Apache Software License
License: sortedcontainers license
soupsieve version 2.8.3
Synopsis: A modern CSS selector implementation for Beautiful Soup.
License type: MIT License
License: soupsieve license
Sphinx version 9.0.4
Synopsis: Python documentation generator
sphinx-autodoc-typehints version 3.6.1
Synopsis: Type hints (PEP 484) support for the Sphinx autodoc extension
License type: MIT License
License: sphinx-autodoc-typehints license
sphinxcontrib-applehelp version 2.0.0
Synopsis: sphinxcontrib-applehelp is a Sphinx extension which outputs Apple help books
License type: BSD License
sphinxcontrib-blockdiag version 3.0.0
Synopsis: Sphinx "blockdiag" extension
License type: BSD License
License: sphinxcontrib-blockdiag license
sphinxcontrib-devhelp version 2.0.0
Synopsis: sphinxcontrib-devhelp is a sphinx extension which outputs Devhelp documents
License type: BSD License
sphinxcontrib-htmlhelp version 2.1.0
Synopsis: sphinxcontrib-htmlhelp is a sphinx extension which renders HTML help files
License type: BSD License
sphinxcontrib-jsmath version 1.0.1
Synopsis: A sphinx extension which renders display math in HTML via JavaScript
License type: BSD License
License: sphinxcontrib-jsmath license
sphinxcontrib-qthelp version 2.0.0
Synopsis: sphinxcontrib-qthelp is a sphinx extension which outputs QtHelp documents
License type: BSD License
sphinxcontrib-serializinghtml version 2.0.0
Synopsis: sphinxcontrib-serializinghtml is a sphinx extension which outputs "serialized" HTML files (json and pickle)
License type: BSD License
sse-starlette version 3.2.0
Synopsis: SSE plugin for Starlette
stack-data version 0.6.3
Synopsis: Extract data from python stack frames and tracebacks for informative displays
License type: MIT License
License: stack-data license
starlette version 0.52.1
Synopsis: The little ASGI library that shines.
superqt version 0.7.6
Synopsis: Missing widgets and components for PyQt/PySide
License type: BSD License
License: superqt license
tables version 3.10.2
Synopsis: Hierarchical datasets for Python
License type: BSD License
License: tables license
tcia_utils version 1.5.1
Synopsis: A package to simplify common tasks one might perform when interacting with The Cancer Imaging Archive (TCIA) via Jupyter/Python.
License type: Apache Software License
License: tcia_utils license
tifffile version 2025.3.13
Synopsis: Read and write TIFF files
License type: BSD License
License: tifffile license
tinyarray version 1.2.5
Synopsis: Arrays of numbers for Python, optimized for small sizes
License type: BSD License
License: tinyarray license
tornado version 6.5.4
Synopsis: Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
License type: Apache Software License
License: tornado license
traitlets version 5.14.3
Synopsis: Traitlets Python configuration system
License type: BSD License
License: traitlets license
typing-inspection version 0.4.2
Synopsis: Runtime typing introspection tools
typing_extensions version 4.15.0
Synopsis: Backported and Experimental Type Hints for Python 3.9+
urllib3 version 2.6.3
Synopsis: HTTP library with thread-safe connection pooling, file post, and more.
uvicorn version 0.40.0
Synopsis: The lightning-fast ASGI server.
wcwidth version 0.6.0
Synopsis: Measures the displayed width of unicode strings in a terminal
webcolors version 24.11.1
Synopsis: A library for working with the color formats defined by HTML and CSS.
License type: BSD License
License: webcolors license
wheel version 0.45.1
Synopsis: A built-package format for Python
License type: MIT License
License: wheel license
wheel-filename version 1.4.2
Synopsis: Parse wheel filenames
License type: MIT License
License: wheel-filename license
widgetsnbextension version 4.0.15
Synopsis: Jupyter interactive widgets for Jupyter Notebook
License type: BSD License
License: widgetsnbextension license
yarl version 1.22.0
Synopsis: Yet another URL library
License type: Apache Software License
License: yarl license