Messenger

Singlebox - All-in-One Messenger Free

Stork Business Messenger Free

twinme - Private Messenger Free

Skred Messenger Desktop Free

Multi Messenger Free

Speek! Secure Messenger

All-In-One Messenger - support multiple accounts

Multiple accounts for all messenger (supports FB Messenger, Telegram, WhatsApp, Google Chat)

Multiple accounts for all messenger (supports FBMessenger, Telegram, WhatsApp)

Kik Messenger Guides