Pursenal
A FOSS Cash register app.
Pursenal - a FOSS money management app. Built to bring together the best (and missing) features from various similar apps into a single, cross-platform tool.

Key Features:
Profiles: Manage different sets of transactions (personal, business, etc.) with dedicated currencies.
Accounts: Set default Income/Expense accounts at the start or add them later as needed.
Personalization: Various options available, with more on the way.
Visualization: Charting for expenses and income.
Budgeting: Budget as per your income and average expenses.
Cross-Platform: One code base for all platforms with a reactive design.
Projects: Assign expenses and income to a specific project, like Freelance work, Wedding expenses etc. and track them.

This app is completely opensource.
More features are coming very soon.