My Budget is a free, open-source offline cross-platform budgeting solution built with Electron. Features

Completely offline - your information is yours only, it remains on your computer. Simple - only contains what you need to budget. Passphrase protected - protect your data by providing a passphrase to encrypt your data (this is optional). Limited* support to sync transactions with your bank. See here for more details. Built with Electron - supported on Linux, MacOS and Windows.