mmex

Money Manager Ex (MMEX) is a free, open-source, cross-platform,
easy-to-use personal finance software. It primarily helps organize
one's finances and keeps track of where, when and how the money goes.
MMEX includes all the basic features that 90% of users would want to
see in a personal finance application. The design goals are to
concentrate on simplicity and user friendliness - something one can
use everyday.