Budse is a simple budgeting tool that implements bucket (or envelope) budgeting. Currently there is a Command Line Interface (CLI) with a Graphical User Interface in progress. The program includes extras such as transaction searching and reports.
Magot is a cross-platform personal finance manager written in Python. A check-book like register GUI allows you to enter transactions and track bank accounts, incomes and expenses. It's based on formal accounting principles, PEAK and WxPython.