Firefly III: a personal finances manager
Free, easy, personal accounting for everyone
Record your investments in stocks, shares and funds
Quoter - The Console Based Stock Quote Tool
A simple example to show the use of GnuCash C API
CostPal is your personal finance manager
Family Budget Planner is a PHP MultiLingual easy to use tool .
A free alternative to MS Money
Shows how Money is created, interest side-effects and solutions
An other free stock market software in C++/Python
Gerenciador de finanças pessoais / Personal finance manager