Bigcapital

Bigcapital is an open-source accounting and inventory application designed for small and medium businesses. It helps organize transactions using double-entry bookkeeping and provides financial statements and reporting to support day-to-day decision-making.

Key Features

• Double-entry accounting with journals and account categorization
• Sales and purchase invoicing, including recurring invoices
• Customer and vendor payment tracking
• Expense tracking and expense accounting workflows
• Inventory tracking with automatic stock adjustments on buy/sell
• Financial statements and business reports
• Multi-currency accounting with exchange-rate conversion
• Organization collaboration with role-based permissions for accountants/bookkeepers
• API-first “headless accounting” for integrating with other systems

Use Cases

• Replace or complement proprietary small-business accounting tools
• Track invoices, bills, expenses, and inventory for a growing business
• Integrate accounting and reporting into an existing product via API

Limitations and Considerations

• Some advanced features expected in mature ERP/accounting suites may be incomplete or evolve over time

Bigcapital is a solid choice for teams that want an open-source, API-capable accounting system with invoicing, expenses, inventory, and reporting in one place. It is particularly suitable for SMBs that need control over deployment and data while keeping a modern web-based workflow.