One Chat 3.2 Multilangual Mac OS X

One Chat combines chat and messaging services into one simple Mac application. WhatsApp, Facebook Messenger, Hangouts, Telegram, Skype, Slack, WeChat, Twitter, YahooChat, ICQ chat, HipChat, Discord, GroupMe and QQ.

Use it for the following messenger and chat like a boss:-
WhatsApp, Facebook Messenger, Hangouts, Telegram, Skype, Slack, WeChat, Twitter, YahooChat, ICQ chat, HipChat,Discord, GroupMe and QQ.

Features:
Send and receive Photos, Videos, doc, PDF..etc
Use Multiple parallel accounts of any service.
Get respective Notifications alerts and reply from the same.
Customize messaging service order in the side menu.
FaceTime calling from WhatsApp & Telegram numbers.
Customize notification as per your requirement.
Shows notifications badges for individual services.
Check if there are any unread messages, right in the menu bar.
Go Full-screen! Chat with your friends, distraction free in the full-screen mode.
Lightweight all, with minimum installation size.
Retina Display enabled icons
Easy to use user-interface(UI) and user-experience(UX)

What's New in Version 3.2
Added New messaging services Yahoo Chat, ICQ, Discord, Groupme, QQ, Messenger for Facebook Pages.
FaceTime calling from WhatsApp
FaceTime calling from Telegram
Added Touch bar support for New MacBook Pro(2016)
Improvements in User Interface
Improved user preferences for more customisations
Fixed Skype calling plugin.
Major bug fixes requested by users.
Notifications optimised.

Improvements in Previous versions:
Multiple (Unlimited) Accounts for all messaging services.(hope you love it)
Individual Notifications for every accounts added
Rearrange messaging services on the menu.
Fixed shortcuts keys.
Added indicator for file download.
Fixed network connection status.
Take video and selfie from WhatsApp.
Notification Badges for individual chats services.
Added Twitter service
Loading issue resolved
Fixed Hangouts and Skype calling.
Fixed upload of media, docs and other files from the folder.
Added more services, Google Hangouts, HipChat, WeChat
Supports New MacOS Sierra Version: 10.12
Password Protection for privacy
Now use two different accounts of every service(messenger)
Add/Remove services from the left menu, as per the requirement.
Customise Notifications as per different accounts.
Fixed Media(Picture, Video or music) upload and download issue.
Fixed URL click issue in Facebook messenger.

Compatibility: OS X 10.10 or later, 64-bit processor

Home Page - http://appyogi.com/apps/one-chat-all-in-one-messenger/