MoneyDance

moneydance.com

Some useful features:
 * Imports data from Quicken and Money.
 * Runs with exactly the same interface on Linux, Windows and OSX machines (Java program).
 * Linux/Windows/OSX users can share the same data file, for instance on a network volume. (But note that only a single user may have the file open at a time to prevent corruption.)
 * Responsive support from publisher and other users - see Forum section of website.
 * Reasonable licensing: affordable price, free upgrades, husband and wife need only 1 license regardless of how many machines (any OS) they install it on.
 * Free demo with no time or functionality limit, 100 new transaction limit.