DocMoto 

DocMoto is a Document Manager that anybody can use. Incorporates all key document management technologies including version tracking, full security and multi-user capability. Completely Internet compliant, and can be configured in minutes.
document managemennt document manager file manager file revision control file version control file version tracking webdav server webdav document version control document revision document version tracking

Atrium 

Atrium is a web-based file sharing tool that allows architectural firms to publish CAD drawings and other documents for team collaboration. Reduces costs and improves efficiencies between architects, engineers, construction, and management personnel.
file sharing cad drawings architectural firms autocad cad cad drawing cad document sharing architect architects architecture architecturing engineer engineers engineering builder management solution

Pragmatic Office 

Pragmatic Office is a powerful intranet that allows your team to collaborate effectively via the web. Share documents, appointments, project deliverables, and customer contacts via the web. Schedule conference rooms and vacations.
intranet web collaboration customer tracking track customer track customers crm client tracking track client track clients project collaboration project deliverable project deliverables project task