CDF Player is a Computable Document Format viewer developed by Wolfram Research.^{[1][2][3][4][5][6][7][8][9][10][11][12]} The proprietary CDF Player is released with a restricted license, which can be downloaded free of charge from Wolfram Research.^[13] In contrast to static formats such as PDF and pre-generated interactive content provided by formats such as Adobe Flash the CDF Player contains an entire runtime library of Mathematica allowing document content to be generated in response to user interaction using any algorithms or visualizations which can be described in Mathematica.^[14][15] This makes it suitable for scientific, engineering and other technical content^[13] and digital textbooks.^[16]

The CDF player has been rebranded as the Wolfram player^[17][18] to reflect the fact that the player can run regular computational notebooks produced in the Wolfram Language. The player is available for Microsoft Windows, Macintosh, Linux and iOS^[19] but not for e-book readers or Android tablets. Users on Android can use the Wolfram cloud app instead in order to access Wolfram language notebooks. With access to a cloud basic account for free and the help of the player, users can now freely compute, publish and read computational notebooks in the Wolfram language.^[18]