GnuCash allows you to track bank accounts, stocks, income, and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports. It is backed by an active development community and is blossoming into a full-fledged accounting system.
ISPacct (formerly Brickacct) accounts the logfiles which Bintec routers spew out depending upon configurable rules. Logfile-analyzing mail accounting functionality is also included (in beta stage). It has multiple backends like text, HTML, and MySQL. It was designed and used by a small ISP and is geared towards such uses as monthly accounting per IP or per dial-in use.
rimric interactive offers complete intranet/Internet databasing and collaboration solutions for any sized business or project. You can maintain invoices, purchase orders, contacts, investment groups, securities, and other data sets, or establish a Wiki based on standards, all using the fastest technologies available.
DreamHost supports automated billing. All hosting, domains, orders, accounts, statistics, and billing can be viewed and updated in the admin area (no programming or HTML experience needed). It supports all top level domains, and you can add or remove as many as you like. Each top level domain can be assigned a different registration cost for each year (1-10 years). Customers can login and update their account information and password. It uses MySQL and PHP, making it very fast and dependable. It includes many more convenient features.
Compiere is an integrated ERP and CRM business solution for automating financial, distribution, sales, and service processes, including: financial management, purchasing, materials management, manufacturing, order management, project accounting, customer management, sales, service requests, ecommerce, reporting, and performance management. Compiere utilizes a powerful model-driven application platform that provides customers with unprecedented adaptability, rapid deployment, and low cost of ownership.
Invoice Me is an online invoicing system, with automatic billing status indicator. With the correct IDs, customers may search their own invoices, and view the payment status (with an option to hide paid invoices). It features search, add, edit, and delete admin interface. When creating a new invoice, the administrator can opt to email a copy of the invoice directly to the customer. Viewers can print the invoices easily via a Print Mode.
MyEasyMarket is a small but powerful eshop solution for small or large e-business. It includes full remote administration via Web, logging, basket solution, buying solution, products administration, categories, user administration, and different administrators for different sections.
Custom is an E-Commerce system providing Ordering and Invoicing, Stock, Supplier, and Catalogue Management. Easily customisable, it is written in Python for use as CGI scripts (under Apache or any other Web server) with a simple example site and example database. Custom is intended as a modern replacement for Sage.