Support.com Cloud - Support.com Cloud is omnichannel, cloud-based customer support software that reduces customer effort, maximizes the value customers get from products, and increases customer and agent satisfaction.
Call2friends - High-quality cheap and free international calls online to any mobile or landline numbers from internet and free calling app - cheaper than other VoiP providers. Try it now!
Talkus - Chat with your website users from Slack
Make Free Calls Online - Make Free Calls Online is a web application that, as the name suggests, allows its users to make international and local calls for free.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Poptox - Poptox is a web application where you can communicate with people in every corner of the world.