vtiger CRM is a free, full-featured, 100% Open Source CRM software ideal for small and medium businesses, with low-cost product support available to production users that need reliable support.
Workflow Magic is a robust framework for develop both SaaS or On-Site business applications.
Workflow Magic provides an Open Source Business Rules Engine, with a great User Interface and a robust Data Access Layer.
To develop SaaS applications, Workflow Magic runs over a data-web service. So, you can connect databases on web as you working on LAN.
Este programa está hecho con RCP, de Eclipse. Quizás sea muy bueno como ejemplo de arquitectura distribuida con RCP. Usa un server JBOSS y base de datos MySQL.