Kchmviewer is a free, open-source CHM (Compiled HTML Help) file viewer.
Best ExtraCHM Alternatives ranked by AI · updated May 2025
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ExtraCHM is a feature-rich CHM file viewer and eBook reader.
Price: Free
🎯 extrachm.com
Top 6 ExtraCHM alternatives
xCHM is a cross-platform GUI front-end to the chmlib. It is written with the Qt library in C++.
CHM Reader is a CHM file viewer for Windows 10. It provides basic features for reading CHM files.
Pros
- Integrated with Windows 10
- Simple and lightweight
Cons
- Limited features compared to other alternatives
- Windows 10 exclusive
ChmSee is a viewer for Microsoft Compiled HTML Help (CHM) files.
GnoCHM is a CHM file viewer for GNOME. It is designed to integrate nicely with your GNOME desktop environment.
CHM Viewer is a simple and lightweight CHM file viewer with basic features.
Pros
- Easy to use
- Fast loading
Cons
- Lacks advanced functionalities
- Windows only
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