Chatzy is described as 'free private chat service which you can use to communicate with people you already know or people who visits your blog or website. With Chatzy you can create a chatroom and send out email invitations very quickly and easily. No registration is required' and is a Instant Messenger in the Social & Communications category. There are more than 50 alternatives to Chatzy, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Mac. The best alternative is Jitsi, which is both free and Open Source. Other great sites and apps similar to Chatzy are WhatsApp (Free), Wire (Free Personal, Open Source), Hangouts (Free) and Zulip (Free Personal, Open Source).
Kaidan is a simple, user-friendly Jabber/XMPP client providing a modern user interface using Kirigami and QtQuick. The back-end of Kaidan is written in C++ using the QXmpp XMPP client library and Qt 5.
Telephone allows you to make phone calls over the Internet or your company network. If your phone line supports SIP protocol, you can use it on your Mac instead of a physical phone anywhere you have a decent network connection.
Team.video helps remote teams have happier, more productive meetings by offering user friendly video meetings with agendas, collaborative notes, and emoji responses. No download required and it’s free to use.
Walkie is a better way to communicate for distributed teams that don't want to spend all day in dry text channels. Voice Only A voice only communication tool that enables teams to communicate with emotion and purpose. Distraction Free