Novulo offers the following sample projects as free Application Templates. You can open them in the Architect and modify them to your needs.
The simple ERP system contains company and employee registration, project management, time registration and invoicing. It features automatic creation of invoicelines based on time registrations and automated creation of invoices based on collected invoicelines.
The Demo CRM system focusses on organizations, contacts and their respective roles in projects. Product registration in the system allows projects to contain instanced products from the product catalog. A special construction using "employments" allows contacts to be related to organisations with a specific timeframe.