Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
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
Manula - Manula is an online software for creating user manuals.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.