ChordEase
The portable app has NO INSTALLER, and doesn't use the registry; all settings are stored in an INI file in the same folder as the app. If you want an installer, download the regular app above.
Additional song files are available here and here. Here are the contents of the latter.
For a list of changes, see the release notes.
For printable help, download ChordEase Help.
Older releases are available here.