One Chat combines chat and messaging services in one simple application Mac. 
WhatsApp, Facebook Messenger, Telegram, Skype and Slack 

An application for all messaging services. 

Use it for the following messengers: WhatsApp, Facebook Messenger, Telegram, Skype and Slack 

▸ send pictures and videos directly from and to the system. 
▸ Receive alerts respective notifications and respond in kind. 
▸ Go full screen! Chat with your friends free of distractions in full screen mode. 
▸ Check for unread messages, right on the menu bar. 
Lightweight ▸ consuming system memory minimum around 70% lower.
▸ 80% low battery consumption. 
▸ An application for all messengers. 

Next update:
– More chat services 
– Using multiple accounts for the same service chat. 
– Password protection 
– and much more. 

Privacy and Security
One Chat does not read anything you write, send or receive! Not even any of your login credentials are stored anywhere. Each messenger lives in its own tab, and can not be accessed by other messengers.