Disa has been discontinued. One of the most popular alternatives is Signal, which is free and open source. Other popular alternatives are Telegram, Element, Pidgin and Tox. There's no shortage of Instant Messengers like Disa, with more than 100 alternatives for Android, iPhone, Windows, Mac and iPad.
Offers free global video and voice calling, group chat with up to 50 participants, in-app messaging that bypasses SMS plans, music clip sharing via Spotify, photo editing, gaming and gifts, animated messages, mini-games during calls, and centralized media gallery.
Cyprus
EU
FaceFlow is a free web-based application for video calling and group video calling. It also offers additional features such as chat rooms.
Canada
Line2 is a VoIP phone service that lets you call & text from a separate phone number via WiFi or 3G/4G/LTE. At a small premium, Text & call ANYONE in the US/Canada, forwarding & more. Pick any phone number.
United States
Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of Pidgin . Over 250 add-ons allow user customization of, and addition of, features.
FranceEU
Kontalk is a secure instant messenger, allowing you to send and receive text, image and voice messages (other file types coming soon) to and from other Kontalk users completely free of charge.
ItalyEU
Tribe is the easiest way to message. Just press and hold to record a message. Release to send.
Canada
Monal is an open source iOS and macOS XMPP Chat-Client. It can connect to any standard XMPP chat server such as Gtalk or Facebook chat.
United States
BlackBerry Hub+ Inbox is a consolidated app for emails, calendar events, and social notifications from platforms like Facebook, WeChat, Twitter, LinkedIn, WhatsApp, and more. It is compatible with Android Wear and not just limited to BlackBerry devices.
Canada
TextMe is an easy to use messaging application that allows you to send unlimited text, voice, pics, video messages to any mobile phone number in United States, Canada, Mexico, China and more than 40 countries in the World for FREE.
United States
An encrypted instant messaging with video call and GPS features for android.
Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. It also offers a great end-user experience with features like in-line spell checking, group chat...
United States
