2do is a simple to-do list manager written in PHP and using a MySQL database backend. It supports unlimited numbers of projects, has templated HTML allowing for complete customisation, and can be publically viewable by all, or can be protected by passwords. Administration is done via simple Web-based forms.
ARIA is business class management (ERP) software. It lets you manage inventory levels, maintain payroll, and process orders. It is written primarily in PHP and incorporates the ADODB database abstraction layer. There are currently translations for Chinese, Spanish, Italian, and French.
Achievo is a Web-based project management and tracking tool for small- to medium-sized companies, aiming to become a fully featured ERP-like system in the future. Features include a time registration module, scheduler, project management, todo's, and several statistical tools. Achievo is multi-language, fully customizable, and uses a modular system to allow future extensions.
Admelix is a live CD distribution based on Ubuntu Linux with tools for business administration. Its main objective is to guide managers of small and medium-size businesses towards GNU/Linux and open source software. In addition to the live CD, the project's Web site provides information about open and free tools for business administration.
Agilefant is a backlog management system that can be used when spreadsheets and most of the current issue tracking and project management systems meet their limits. It is intended to be used with agile methodologies that emphasize building releasable software in short, fixed time periods, where features are commonly managed using "backlogs".
The Amberdms Billing System is a Web application that provides accounting, invoicing, service billing, and time keeping functions. It is designed for small and medium businesses. This program is developer-friendly with a SOAP API, as well as being appropriate for ISPs with service usage billing features.