iChm vs Opal
A side-by-side look at iChm and Opal. For an in-depth review of either product, follow the links below.
iChm
Office & Productivity
iChm is a free, open source CHM file reader for Windows, Linux and macOS. It allows viewing and searching CHM files with a simple and clean interface.
chmreaderviewerdocshelp-files
Opal
Office & Productivity
Opal is an open-source alternative to Microsoft OneNote for taking notes and organizing information. It allows users to create digital notebooks to capture text, drawings, and web clippings.
notesorganizationopensource