Wave
Wave is a free accounting platform that includes invoicing, payment processing, and receipt scanning for small businesses. Users create unlimited branded invoices, manage client lists, and track payment statuses. Wave charges competitive transaction fees for credit card or ACH payments. A built-in accounting engine automatically categorizes transactions for P&L statements, while real-time dashboards highlight cash flow. Though advanced features like inventory or project tracking are limited, Wave suits freelancers or tiny startups seeking cost-effective invoicing and simple bookkeeping in a single interface.