Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Clinked - White-label Client and Team Workspace

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

Slack - A messaging app for teams who see through the Earth!

HelpScout - Help Scout is a simple, straightforward way to provide excellent support

SuiteDash - Integrated & Automated Client Portal Software : Secure Web Based Client or Customer Login Portals : White Label SaaS Project Management System, Online CRM Tool, Browser Based Invoicing & Recurring Billing, Time Tracker, Client File Upload, , All in …