Underpinning the quality of all NAG software is our renowned and comprehensive documentation. Most is available online, from this page. 

• The NAG Library (includes C & Fortran Interfaces)
  Full manual provided in HTML
• NAG Library for SMP and Multicore
  Full manual provided in HTML
• NAG Library for Xeon Phi™
  Full manual provided in HTML
• NAG Library for .NET
  HTML Table of Contents and Windows Help (.chm)
• NAG Toolbox for MATLAB®
  Full manual provided in HTML
• The NAG AD Library (Algorithmic Differentiation)
  Full manual provided in HTML
• NAG Fortran Compiler
  Full manual provided in HTML and PDF
• NAG Library for Java
  Full Fortran Library manual provided in HTML and as a zip file
• NAG Library for Python
  Full API and usage documentation provided in HTML