ConnectIn

This is a B2B professional networking platform for companies and professionals to connect with each other and grow the network.
ConnectIn provides a professional networking platform where users can connect to their fellow professionals, create groups, send messages, create company pages, post and apply for jobs, all in one powerful software platform.
Users can:
• Create their professional profile
• Send and accept invitations to grow connections
• Send messages and Inmails
• Create company pages
• Post jobs
• Apply for job
• Create Groups

Some of the features are available only for the Enterprise Edition. Please check out the edition comparison here https://www.ncrypted.net/connectin/pricing