Computer History Museum Launches Digital Portal to Its Vast Collection - CHM
https://computerhistory.org/press-releases/computer-history-museum-launches-digital-portal-to-its-vast-collection/
MOUNTAIN VIEW, Calif. – January 21, 2026 – The Computer History Museum (CHM), a leader in decoding technology—its computing past, digital present, and future impact on humanity—announced the launch of OpenCHM, a new digital portal providing global access to its unparalleled collection.
Chmox - a Mac OS X CHM viewer
http://chmox.sourceforge.net
"Read your CHM documents on your Mac." Windows help files.