One of the most popular alternatives to Signal is Telegram, which has a free version. Other popular alternatives are Element, Discord, Matrix and Tox. There's no shortage of Instant Messengers like Signal, with more than 100 alternatives for Android, iPhone, Windows, the web and Linux.
MOMO BOARD let you instantly create your own community message board from mobile app or desktop website for free. It combines message board, chat and cloud storage (10 Gb) into one seamless application for efficient community communication.
United States
Messenger for WhatsApp™ (WA Messenger) is a wrapper for WhatsApp Web. It loads WhatsApp Web in toolbar popup UI and has badge icon text notification for all new conversations (even if toolbar popup is closed).
BloomText allows healthcare professionals to send messages and files securely to anyone instantly. Easily replaces the need for fax machines.
VideoMeeting is a free and open source video conference solution built to have video calls and chats using your web browser. It is a pure web application based on WebRTC that can provide communication features within your web browser.
Spain
EU
Palxup leverages on internet to make living worthwhile and full of fun for you by keeping you in constant reach with your family, friends and associate; and also expand your horizon, allowing you more opportunities as you meet new people globally. In short Palxup unlimit you!
Make video calls to anybody in the world with a private connection. Share the conversation by sharing url.
Ricin aims to be a secure, lightweight, hackable and fully-customizable Tox client with focus on user experience. Development is lead by SkyzohKey.
Free calling! Free texting! Make unlimited international calls and send SMS text messages to any number with Dingtone. Get yourself a 2nd phone number from Dingtone!
Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.
HookZApp is a cloud native, secure, fast, and feature-rich Next-Gen communication, collaboration & social media platform that makes everyday life, fun and easy.
Hong Kong SAR China
Plugin enabling end-to-end encryption for instant messages on Pidgin using up to 4096-bit RSA with Mozilla NSS, automatic key creation, exchange, and storage, designed for simple use against man-in-the-middle attacks, open-source, and minimal setup required.
