Messaging Apps that You Can Use Globally:
Rakuten Viber, or simply Viber, is a cross-platform voice over IP and instant messaging software application operated by Japanese multinational company Rakuten, provided as freeware for the Android, iOS, Microsoft Windows, macOS, and Linux platforms.
Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and Signal Messenger LLC. It uses the Internet to send one-to-one and group messages, which can include files, voice notes, images, and videos. It can also be used to make one-to-one voice and video calls, and the Android version can optionally function as an SMS app.
TextNow created the world’s first all-IP, cloud-based mobile phone carrier – a commitment-free mobile messaging and calling application with more than 8M monthly active users. Unlike its competitors, TextNow users automatically receive a dedicated phone number when they sign up for the service. TextNow monitors the Wi-Fi and data networks in real-time so that if coverage degrades at any point, the call is seamlessly transitioned to the optimal network mid-conversation ensuring superior calling quality on the best network at any given time.