zypper camo into rescue when I need to read chm file in opensuse :

# zypper install chmsee

Reading installed packages…

The following NEW packages are going to be installed:
chmsee chmlib

Overall download size: 136.0 K. After the operation, additional 295.0 K will be used.
Continue? [YES/no]: y
Downloading package chmlib-0.39-101.9.i586 (1/2), 30.0 K (65.0 K unpacked)
Downloading: chmlib-0.39-101.9.i586.rpm [done (2.8 K/s)]
Installing: chmlib-0.39-101.9 [done]
Downloading package chmsee-1.0.1-1.13.i586 (2/2), 106.0 K (230.0 K unpacked)
Downloading: chmsee-1.0.1-1.13.i586.rpm [done (2.2 K/s)]
Installing: chmsee-1.0.1-1.13 [done]

chmsee, ready to serve me 🙂