Extend your WordPress installation with BPMContext Intranet Solutions. This plugin adds a login from WordPress to BPMContext.

Add a Client Area with private login in your WordPress site. Invite customers to collaborate and share files.

Add an intranet with private login in your WordPress site. Post announcements, collaborate with team members and share files using Dropbox storage.

The Clinked Client Portal plugin is a great addition to the popular Clinked application - a branded, feature rich client portal.