GroupOffice is a groupware suite that takes your office online, implementing online collaboration and CRM. It allows you to share projects, calendars, files and email online with co-workers and clients. It is easy to use and fully customizable. It also features synchronization with PDAs and Outlook.
Tine 2.0 is a Web-based groupware solution that focuses on usability and correctness. To achieve these goals, the project uses usability experts and covers most of the code by unit tests. It contains support for contacts, tasks, calendar, email, CRM, VoIP integration, a time tracker, ActiveSync, and a flexible rights management system.
The Apache Open For Business Project is an enterprise automation software project that includes ERP, CRM, E-Business/E-Commerce, SCM, MRP, and CMMS/EAM functions. It is a foundation and starting point for enterprise solutions and can certainly be used out of the box, but is also great for creating specialized applications.
AShopV provides a shopping cart with digital goods delivery, affiliate tracking, Swoopo-style auctions, full PayPal support, support for many other payment gateways, many shipping calculation options, and multiple languages and currencies. The software also includes a CRM Sales Office with order management where you can create quotes and turn them into bills that can be paid online, set up automatic recurring billing, manage purchase orders, handle customer and vendor contact through POP3 or IMAP, and view customer and vendor history. A Shopping Mall integrates with the affiliate tracking to let you set up your own ClickBank clone.