Android Apps to Secure Chat

BlackBerry Messenger (BBM) was a pioneering instant messaging and videotelephony application, originally exclusive to BlackBerry devices, which expanded to support iOS, Android, and Windows Mobile. It facilitated secure text messaging, voice calls, and video calls.

Minds is an open-source and decentralized social networking service dedicated to online freedom, privacy, and monetization for content creators. It champions free speech and offers a platform that rewards users for engagement through a points and token system.

Wire is a secure, cross-platform messaging and collaboration client offering end-to-end encryption by default for all communication types including messaging, voice and video calls, and file sharing across desktop and mobile devices.

Threema is a secure and private messaging application that prioritizes user anonymity and data protection. It offers end-to-end encryption for all messages, calls, and files, requiring no phone number registration to enhance privacy.