Signal – Private Messenger

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Signal is a privacy-focused encrypted messaging app. While not directly an AI safety resource, secure communications infrastructure is relevant to AI safety researchers, whistleblowers, and policy coordinators who need confidential channels for sensitive discussions.

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Summary

Signal is an open-source, end-to-end encrypted messaging and calling application operated by an independent nonprofit. It provides secure text, voice, and video communications with no ads, no tracking, and no data collection. It is widely used by journalists, researchers, and activists requiring confidential communications.

Key Points

•End-to-end encryption via the open-source Signal Protocol ensures messages and calls cannot be read by Signal or third parties.
•Operated as an independent nonprofit funded by grants and donations, not tied to major tech companies.
•No ads, no affiliate marketers, and no user tracking built into the platform.
•Supports text, voice, video, files, and encrypted stickers across mobile and desktop platforms.
•Relevant to AI safety community for secure coordination, whistleblowing, and sensitive policy discussions.

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Signal >> Home Speak Freely

 Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect. 
 Get Signal Why use Signal?

 Explore below to see why Signal is a simple, powerful, and secure messenger Share Without Insecurity

 State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either. Privacy isn’t an optional mode — it’s just the way that Signal works. Every message, every call, every time. Say Anything

 Share text, voice messages, photos, videos, GIFs and files for free. Signal uses your phone's data connection so you can avoid SMS and MMS fees. Speak Freely

 Make crystal-clear voice and video calls to people who live across town, or across the ocean, with no long-distance charges. Make Privacy Stick

 Add a new layer of expression to your conversations with encrypted stickers. You can also create and share your own sticker packs. Get Together with Groups

 Group chats make it easy to stay connected to your family, friends, and coworkers. No ads. No trackers. No kidding.

 There are no ads, no affiliate marketers, and no creepy tracking in Signal. So focus on sharing the moments that matter with the people who matter to you. Free for Everyone

 Signal is an independent nonprofit. We're not tied to any major tech companies, and we can never be acquired by one either. Development is supported by grants and donations from people like you. 
 
 Donate to Signal

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