Apps similar to Simple Invoices & Estimates include GnuCash, which is free and open source. Other options are Odoo, HomeBank, ERPNext and Frappe Books. Personal Finance Tools like Simple Invoices & Estimates are a crowded field, with more than 100 alternatives for the web, Windows, Mac, iPhone and Linux.
Stansoft Linux financial accounting software offers a complete accounting solution for every business. It utilizes PostgreSQL or an IBM Informix database, a relational database management system giving you a system that is simple, flexible, and productive.
Legal Time Tracking & Billing Software. Best web-based billing solution for attorneys and other professionals since 1999.
United States
Brand new Touch Screen Small Business Retail Point of Sale Complete Hardware Software System. Everything that you need to run a business.
InvoiceTrackr is software as a service that enables you to input your customers, products and services. You can then create billable line items by time or unit and create pdf invoices based on tracked products and/or services.
Build better eCommerce & business applications with the open-source Scipio ERP framework. From Accounting to Warehouse Management: a long list of business applications is available to you and waiting to be customized.
Germany
EU
Paytradie improves businesses cash flow by providing a simple mobile solution for invoicing and payments; including automatic payment due notifications.
Australia
Clean and simple time tracking and invoicing designed for browser-based freelancers. Categorize your work into projects, log your time using the web app or browser extension, create and send invoices, and track your payments received.
Cashcash is a personal financial-accounting app which respects your privacy. It lets the user visualize his finance with the help of powerful filtering capabilities.
Apptrop Books is a cloud-based accounting and POS software that’s part of the Apptrop ecosystem, designed mainly for small businesses, retailers, and service-based businesses in India.
