If you're looking for something to replace Backdrop, Receipt AI could be a good option. The service automates receipt handling with a combination of AI and SMS technology, freeing up a lot of time for expense tracking and expense reporting. It can handle receipts in various formats and integrates directly with Xero or QuickBooks so you can easily log expenses.
Another option is Zamp, a cash management service with real-time visibility, automated optimization and intelligent reconciliation. Zamp features include real-time forecasting, automated cash sweeps and streamlined global payment execution. It's customizable and has strong security, so it can be a good choice for managing cash and expenses.
If you want a hybrid approach, you might like Spreadsheet.com, an online spreadsheet tool that combines the traditional spreadsheet interface with modern automation and integration. It offers a variety of views and charts, automations and integration with more than 4,000 apps. That can be good for tracking expenses and monitoring project budgets.