One of the most popular alternatives to WhatsApp is Signal, which is free and open source. Other popular alternatives are Telegram, Element, Matrix and Fluxer. You're spoiled for choice with Instant Messengers like WhatsApp: we list more than 100 alternatives for Android, iPhone, Windows, iPad and the web.
GyachE Improved (GyachI) is a fork from Gyach Enhanced Yahoo! client for Linux operating systems. This Yahoo! client supports almost all of the features you would expect to find on the official Windows Yahoo!
MeetFox helps you maximize your most valuable asset - time. It is an end-to-end meeting platform that combines appointments scheduling, in-browser video calls, and secure client payments with invoicing.
Send free (1) voice messages to your near and friends. Video demonstration: http://youtu.be/qA7a_RlE0rY Listen to the messages from your friends. Grace notifications you can start a voice chat. Long duration message, only limited by memory and the mailbox of the .
AVAILO is a business communication app for teams. One place for internal and external communications, open groups for your team members, service providers and customers, with real time messaging, share emails, folders and files, in a simple way.
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Retro AIM Server is an instant messaging server that revives AOL Instant Messenger (and ICQ!) clients from the 2000s.
