Also, invoices in Zoho Invoice are more customizable than those in similar software. Unlike other free invoicing software that often provide limited design templates to choose from, Zoho Invoice presents a wide selection of professionally designed templates as a starting point. Zoho Invoice emerges as our best free invoice software due to its user-friendly interface and exceptional features, most notably the ability to completely customize invoices, set up recurring invoices, and add tracked expenses directly to invoices.