6. Personal Finance Manager
For the small business with payroll and invoicing needs already taken care of, Personal Finance Manager offers a handy way to track expenses using a free Android app, which later syncs with a backend running Linux, Mac OS X or Windows. This free open source tool works across multiple bank accounts and provides an easy way to track budgets, cash flow and income, as well as a simple means to perform analyses and create reports. It supports exporting to a spreadsheet and backups to Google Drive or external storage.