Signal Messenger, LLC

Signal Messenger, LLC is a non-profit software publisher founded by privacy activists and sustained by donations, best known for the open-source Signal application that has become a reference implementation for end-to-end encrypted communication. The company’s sole product is a cross-platform messenger that replaces the default SMS client on Android and operates as a standalone instant-messaging service on iOS, Windows, macOS, and Linux, offering text chats, high-definition voice and video calls, group conversations, and media sharing while applying modern cryptographic protocols such as the Signal Protocol, Double Ratchet algorithm, and forward-secure secp256r1 curves. Typical use cases range from journalists protecting sources and healthcare providers discussing sensitive patient data to families seeking a surveillance-free alternative to mainstream social chat apps, businesses running confidential project channels, and developers embedding the open Signal Protocol into other collaboration suites. Because the code base is publicly auditable and the server infrastructure is designed to minimize retained metadata, Signal is frequently recommended by digital-rights organizations and integrated into secure-workflow bundles alongside password managers, VPN utilities, and encrypted email clients. The publisher’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources like winget, always install the latest official release, and can be queued for batch installation alongside other privacy-focused tools.