Unofficial Windows Binaries for Python Extension Packages

by Christoph Gohlke, Laboratory for Fluorescence Dynamics, University of California, Irvine.

This page provides 32- and 64-bit Windows binaries of many scientific open-source extension packages for the official CPython distribution of the Python programming language.

The files are unofficial (meaning: informal, unrecognized, personal, unsupported, no warranty, no liability, provided "as is") and made available for testing and evaluation purposes.

If downloads fail reload this page, enable JavaScript, disable download managers, disable proxies, clear cache, and use Firefox. Please only download files manually as needed.

Most binaries are built from source code found on PyPI or in the projects public revision control systems. Source code changes, if any, have been submitted to the project maintainers or are included in the packages.

Refer to the documentation of the individual packages for license restrictions and dependencies.

Use pip version 8 or newer to install the downloaded .whl files. This page is not a pip package index.

Many binaries depend on numpy-1.11+mkl and the Microsoft Visual C++ 2008 (x64, x86, and SP1 for CPython 2.6 and 2.7), Visual C++ 2010 (x64, x86, for CPython 3.3 and 3.4), or the Visual C++ 2015 (x64 and x86 for CPython 3.5) redistributable packages.

Install numpy+mkl before other packages that depend on it.

The binaries are compatible with the official CPython distribution on Windows >=6.0. Chances are they do not work with custom Python distributions included with Blender, Maya, ArcGIS, OSGeo4W, ABAQUS, Cygwin, Pythonxy, Canopy, EPD, Anaconda, WinPython etc. Many binaries are not compatible with Windows XP or Wine.

The packages are ZIP or 7z files, which allows for manual or scripted installation or repackaging of the content.

The files are provided "as is" without warranty or support of any kind. The entire risk as to the quality and performance is with you.


  1. Index by date:
  2. tornado
  3. blosc
  4. zarr
  5. aiohttp
  6. gevent
  7. regex
  8. fisx
  9. pycares
  10. grako
  11. numpy
  12. numexpr
  13. matplotlib
  14. gdal
  15. gpy
  16. pygame
  17. fabio
  18. cython
  19. jupyter
  20. psycopg
  21. pymongo
  22. numba
  23. scipy
  24. llvmlite
  25. ipython
  26. lightning
  27. sqlalchemy
  28. twisted
  29. dulwich
  30. pyzmq
  31. pytables
  32. pillow
  33. mistune
  34. netcdf4
  35. intbitset
  36. gmpy
  37. debug-information-files
  38. xxhash
  39. logbook
  40. gensim
  41. iris
  42. pymssql
  43. menpo
  44. astropy
  45. bottleneck
  46. vlfd
  47. statsmodels
  48. cffi
  49. cvxpy
  50. psutil
  51. fiona
  52. rasterio
  53. zope.interface
  54. rpy2
  55. pyserial
  56. bcolz
  57. greenlet
  58. biopython
  59. pyfftw
  60. backports.lzma
  61. openimageio
  62. pocketsphinx
  63. pyemd
  64. cytoolz
  65. mercurial
  66. cvxcanon
  67. pymol
  68. shapely
  69. persistent
  70. pycuda
  71. qutip
  72. pyproj
  73. pyicu
  74. coverage
  75. opencv
  76. btrees
  77. ad3
  78. pymvpa
  79. setproctitle
  80. sfepy
  81. spacy
  82. bsddb3
  83. minepy
  84. pip
  85. blaze
  86. cellprofiler
  87. pywin32
  88. mkl-service
  89. veusz
  90. peewee
  91. pandas
  92. python-lz4
  93. apsw
  94. scs
  95. spyder
  96. ets
  97. pyvrml97
  98. cartopy
  99. pyopencl
  100. assimulo
  101. vigra
  102. h5py
  103. pythonnet
  104. lazy_object_proxy
  105. libsbml
  106. scikits.audiolab
  107. la
  108. wrapt
  109. scons
  110. slycot
  111. babel
  112. bioformats
  113. spectrum
  114. mod_wsgi
  115. pyrsistent
  116. py-earth
  117. gr
  118. pycosat
  119. pyyaml
  120. simpleaudio
  121. pycorrfit
  122. pycifrw
  123. pysqlite
  124. cobra
  125. seqlearn
  126. pygresql
  127. qimage2ndarray
  128. lxml
  129. rtree
  130. xarray
  131. datrie
  132. pyldap
  133. javabridge
  134. imaged11
  135. scikit-fmm
  136. sympy
  137. cantera
  138. pyopengl
  139. scikit-image
  140. pygit2
  141. pgmagick
  142. libtfr
  143. vtk
  144. hmmlearn
  145. x86cpu
  146. lsqfit
  147. dipy
  148. autopy
  149. wordcloud
  150. scikit-learn
  151. reportlab
  152. pymetis
  153. simplejson
  154. cyassimp
  155. py-lmdb
  156. ffnet
  157. simpleitk
  158. mysqlclient
  159. nitime
  160. bazaar
  161. yt
  162. cyordereddict
  163. pycurl
  164. bokeh
  165. dynd
  166. genshi
  167. triangle
  168. networkx
  169. pyfits
  170. scikits.odes
  171. python-sundials
  172. python-lzo
  173. msgpack
  174. ujson
  175. python-ldap
  176. cx_oracle
  177. guiqwt
  178. pythonqwt
  179. glumpy
  180. kivy
  181. scandir
  182. pywavelets
  183. netifaces
  184. pulp
  185. libsvm
  186. flann
  187. mahotas
  188. pyamf
  189. pyamg
  190. kwant
  191. cchardet
  192. pythonmagick
  193. tinyarray
  194. libxml-python
  195. cellcognition
  196. qt_graph_helpers
  197. imread
  198. milk
  199. nipy
  200. pyspharm
  201. scikit-umfpack
  202. pymc
  203. simpleparse
  204. iminuit
  205. pyx
  206. polygon
  207. cyrasterize
  208. pymcmc
  209. mpi4py
  210. pyaudio
  211. openbabel
  212. ta-lib
  213. py_gd
  214. openexr
  215. thrift
  216. pyhdf
  217. pyqwt
  218. pyqt4
  219. pyksvd
  220. fonttools
  221. blender-mathutils
  222. cvxopt
  223. jsonlib
  224. pyeda
  225. multineat
  226. pyviennacl
  227. blz
  228. python-igraph
  229. pyglet
  230. cx_freeze
  231. quantlib
  232. pystemmer
  233. llist
  234. gvar
  235. cdecimal
  236. liblas
  237. bigfloat
  238. ceodbc
  239. yappi
  240. entropy
  241. ecos
  242. crcmod
  243. crc16
  244. curses
  245. fann2
  246. python-levenshtein
  247. pypmc
  248. pyminuit
  249. pydde
  250. pycluster
  251. pycld2
  252. fisher
  253. noise
  254. jpype
  255. pyrxp
  256. sparsesvd
  257. zodbpickle
  258. zs
  259. rtmidi-python
  260. line_profiler
  261. lp_solve
  262. marisa-trie
  263. mlpy
  264. natgrid
  265. nlopt
  266. ode
  267. planar
  268. pybluez
  269. pyephem
  270. pyfltk
  271. pyhook
  272. scikits.vectorplot
  273. pyodbc
  274. basemap
  275. bitarray
  276. blist
  277. bsdiff4
  278. fastcluster
  279. hddm
  280. heatmap
  281. liblinear
  282. udunits
  283. twainmodule
  284. python-snappy
  285. pylzma
  286. videocapture
  287. markupsafe
  288. pycairo
  289. boost.python
  290. freeimagedll
  291. pygraphviz
  292. visvis
  293. mxbase
  294. pyvisa
  295. openpiv
  296. meshpy
  297. jinja2
  298. wfastcgi
  299. libpython
  300. pyside
  301. vispy
  302. re2
  303. pymunk
  304. friture
  305. psychopy
  306. pygtk
  307. cgal-bindings
  308. bio_formats
  309. jcc
  310. pysfml
  311. pyexiv2
  312. pylibdeconv
  313. iocbio
  314. pymix
  315. umysql
  316. lazyflow
  317. python-cjson
  318. mmlib
  319. pybox2d
  320. cheetah
  321. pycogent
  322. scikits.timeseries
  323. casuarius
  324. wxpython
  325. ilastik
  326. pyfmi
  327. quickfix
  328. pywcs
  329. scientificpython
  330. vpython
  331. nmoldyn
  332. mmtk
  333. pyalembic
  334. polymode
  335. orange
  336. scikits.delaunay
  337. cld
  338. py-fcm
  339. oursql
  340. zfec
  341. holopy
  342. py2exe
  343. pymutt
  344. carray
  345. llvmpy
  346. cgkit
  347. console
  348. pymedia
  349. pymca
  350. scipy-cluster
  351. scikits.scattpy
  352. scikits.samplerate
  353. scikits.ann
  354. pyxml
  355. pytst
  356. enaml
  357. delny
  358. trfit
  359. mysql-python
  360. htseq
  361. aspell-python
  362. pyusb-ftdi
  363. silvercity
  364. steps
  365. pylibtiff
  366. pysparse
  367. fipy
  368. vitables
  369. pyropes
  370. scikits.hydroclimpy
  371. sendkeys
  372. pydbg
  373. kiwisolver
  374. atom
  375. docutils
  376. faulthandler
  377. pyisapie


Other useful packages and applications not currently available on this page


Build Environment

  1. Libraries (built from source):
  2. Alembic
  3. AMD
  4. ANGLE
  5. ANN
  6. ASIO
  7. Aspell
  8. Assimp
  9. AVbin
  10. BerkeleyDB
  11. BLAS
  12. Blosc
  13. Boost
  14. Box2D
  15. bsd-xdr
  16. bzip2
  17. C-ares
  18. Cairo
  19. Cassowary
  20. CFitsIO
  21. CGAL
  22. Chipmunk2D
  23. EasyBMP
  24. Eigen
  25. Expat
  26. FFTW
  27. FLAC
  28. FLANN
  29. FLTK
  30. FMILibrary
  31. Freeglut
  32. FreeImage
  33. FreeTDS
  34. FreeType
  35. FreeXL
  36. GDAL
  37. GEOS
  38. GeoTIFF
  39. GLEW
  40. GLFW
  41. GLPK
  42. GLUT
  43. GraphicsMagick
  44. Graphviz
  45. GSL
  46. HDF4
  47. HDF5
  48. iconv
  49. ICU
  50. igraph
  51. ImageMagick
  52. ITK
  53. JasPer
  54. jsoncpp
  55. Jxrlib
  56. Kerberos
  57. KissFFT
  58. Klib
  59. LAME
  60. LAPACK
  61. LEMON
  62. lib3ds
  63. libcurl
  64. libevent
  65. Libffi
  66. libGD
  67. libgit2
  68. Libidn
  69. libInChI
  70. libjpeg
  71. libjpeg-turbo
  72. LibKML
  73. LIBLINEAR
  74. liblzma
  75. libmng
  76. libpng
  77. LibRaw
  78. libsamplerate
  79. libSBML
  80. libsodium
  81. libspatialindex
  82. libssh2
  83. LIBSVM
  84. LibTIFF
  85. libusb
  86. Libxml2
  87. Libxslt
  88. LibYAML
  89. Little CMS
  90. LLVM
  91. lp_solve
  92. lz4
  93. LZMA
  94. LZO
  95. Mesa
  96. METIS
  97. Minizip
  98. MPC
  99. MPEG_Encode
  100. MPFR
  101. MPIR
  102. MUMPS
  103. Muparser
  104. MySQL Connector/C
  105. NetCDF
  106. Netpbm
  107. ODE
  108. Ogg
  109. onig
  110. OpenAL
  111. OpenBabel
  112. OpenColorIO
  113. OpenCV
  114. OpenEXR
  115. OpenImageIO
  116. OpenJPEG
  117. OpenLDAP
  118. OpenMPI
  119. OpenNI
  120. OpenPGM
  121. OpenSSL
  122. PDCurses
  123. Pixman
  124. PortAudio
  125. PortMidi
  126. PostgreSQL
  127. PROJ.4
  128. Ptex
  129. Pthreads-w32
  130. Qhull
  131. Qt
  132. QuickFIX
  133. RE2
  134. RtMidi
  135. SASL
  136. SDL
  137. SDL_gfx
  138. SDL_image
  139. SDL_mixer
  140. SDL_ttf
  141. SFML2
  142. Silo
  143. SLICOT
  144. Smpeg
  145. Snappy
  146. sparsehash
  147. SPHEREPACK
  148. SQLite
  149. SuiteSparse
  150. SUNDIALS
  151. SuperLU
  152. SZip
  153. TCL/TK
  154. UDUNITS
  155. UMFPACK
  156. Uriparser
  157. ViennaCL
  158. Vorbis
  159. VTK
  160. WebP
  161. wxWidgets
  162. Xerces
  163. Xmlsec
  164. YAML
  165. ZeroMQ
  166. zlib
  1. SDKs and libraries (prebuilt):
  2. Apache HTTP Server
  3. ASIO SDK
  4. Bio-Formats
  5. ESRI File Geodatabase API
  6. GTK2
  7. Intel Integrated Performance Primitives
  8. Intel Math Kernel Library
  9. Intel SDK for OpenCL Applications
  10. Intel Threading Building Blocks
  11. libsndfile
  12. MATLAB(tm)
  13. Microsoft DirectX SDK (June 2010)
  14. Microsoft MPI v6
  15. Microsoft Platform SDK for Windows Server 2003 R2
  16. Microsoft SQL Server
  17. Microsoft Windows SDK v6.1 Windows Server 2008 and .NET Framework 3.5
  18. Microsoft Windows SDK v7.0 for Windows 7 and .NET Framework 3.5 Service Pack 1
  19. Microsoft Windows SDK v7.1 for Windows 7 and .NET Framework 4
  20. NVidia CG Toolkit
  21. NVidia CUDA Toolkit
  22. Oracle Instant Client
  23. Oracle Java SE Development Kit
  24. Python
  25. R
  1. Compilers:
  2. Clang
  3. Intel Composer XE 2013 SP1
  4. Intel Parallel Studio XE 2016 Composer
  5. Lazarus
  6. Microsoft Platform SDK for Windows Server 2003 R2
  7. Microsoft Visual C++ 2008 Feature Pack
  8. Microsoft Visual C++ Compiler for Python 2.7
  9. Microsoft Visual Studio .NET 2003
  10. Microsoft Visual Studio 2008 Pro
  11. Microsoft Visual Studio 2010 Pro
  12. Microsoft Visual Studio 2015 Community
  13. MinGW
  14. MinGW-w64
  15. Mingw-w64-for-python
  16. NASM
  17. Rtools
  18. Yasm
  1. Build tools:
  2. ActivePerl
  3. Ant
  4. Bazaar
  5. Bento
  6. BJam
  7. CMake
  8. CVS
  9. Cygwin
  10. Cython
  11. doxygen
  12. Epydoc
  13. Git
  14. JCC
  15. Jom
  16. M4
  17. Mercurial
  18. MSYS
  19. MSYS2
  20. Node.js
  21. Nose
  22. NSIS
  23. PyPy
  24. Python
  25. SCons
  26. SIP
  27. Sphinx
  28. Subversion
  29. SWIG
  30. Waf
  1. Other software:
  2. 7-Zip
  3. Avconv
  4. com0com
  5. Dependency Walker
  6. FFmpeg
  7. GhostScript
  8. GnuWin32
  9. Info-ZIP
  10. Inkscape
  11. InpOutx64
  12. MEncoder
  13. MiKTeX
  14. Notepad++
  15. Pandoc
  16. PTVS
  17. Redis
  18. Spyder
  19. Sysinternals Suite
  20. Ubuntu
  21. Windows 10
  22. WingIDE
  23. WinMerge
  1. Other CPython distributions:
  2. ActivePython
  3. Anaconda
  4. Python(x,y)
  5. Pyzo
  6. WinPython

Christoph Gohlke, Laboratory for Fluorescence Dynamics