GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.
KMyMoney - KMyMoney is a personal finance manager for KDE.
Xcalibur - Control, and process data from Thermo Scientific LC-MS systems and related instruments
Money Manager Ex - Money Manager Ex is a free, open-source, cross-platform, easy-to-use personal finance software.
Bankin - An automated financial coach available in France 🇫🇷
GreenStash - GreenStash is a simple FOSS android app to help you plan and manage your savings goals easily and establish the habit of saving money.