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

Radius - Modern marketing for companies targeting local businesses.

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

Active Directory - Are you an AD beginner? Read this article to understand the basics of Active Directory and get a clearer picture of it.

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

LDAP - LDAP is a very flexible standards-based method that can be used to store and query information about users, groups, devices and provide authentication and authorization services in a networked environment.