.nb file: how to open it on Windows

3 Windows apps register the .nb extension. Install one of them to open the file with a double-click.

About the format

Format

Mathematica Notebook file

MIME type

application/mathematica

PRONOM identifier

x-fmt/349, fmt/201

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• 
  Netron

  Visualizer for neural network, deep learning, and machine learning models

  Open source 9.2.8 ★ 33.6K
• W
  WPD Converter

  Convert WordPerfect documents, DataPerfect databases, and WordPerfect Notebooks locally.

  Proprietary 6.3.2
• E
  EverEdit

  Professional Text & Source Editor

  Proprietary 4.5.0.4500

Related guide: Change the default app for a file type in Windows