thriftmac

Messaging
category

Adium

A free instant messaging app that can connect to AIM, MSN, Jabber, Yahoo, and more. Under active development and highly recommended.

Franz

Get all your chat and messaging services in one place. Supports Slack, WhatsApp, WeChat, HipChat, Facebook Messenger, Telegram, Google Hangouts, GroupMe, Skype and more — with the option of having more than one account for each service.

Skype

What’s not to like about making free phone calls with your computer? Well, it’s not quite as handy as an actual telephone. But at this price, it sure is tempting.