CanOpener 2.5 from Abbott Systems, as found on [Mac Treasure Box -
1996][1].
See also:
[CanOpener 3.5][2]
[CanOpener 4.0][3]
Compatibility
Architecture: 68k
[1]:
http://macintoshgarden.org/apps/mac-treasure-box-1996-apps-utilities-games
[2]:
http://macintoshgarden.org/apps/canopener-35
[3]:
http://macintoshgarden.org/apps/canopener-40