Phantombuster - A marketplace of simple to use no-code APIs

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

TexAu - Growth automation to scale your business faster

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

Wicked PDF - PDF generator (from HTML) plugin for Ruby on Rails

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