HelpNDoc exclusively runs on Windows operating systems. Recommended system requirements are:
- Windows 10 or Windows 11
- 512MB of RAM
- 230MB of free disk space
- 1024x768 screen resolution or higher
- Microsoft HTML Help Workshop is required to compile CHM help files
- Amazon KindleGen is required to compile Kindle compatible eBooks
- The Qt Framework is required to compile Qt Help files
- Microsoft Edge WebView2 Runtime (already installed on updated versions of Windows)