# Signal

- **Website:** <https://whispersystems.org>
- **Primary alias:** `whispersystems.org`

## Description

Signal is an independent nonprofit organization that develops a secure messaging app designed to make private communication simple and accessible. Its core offering is end-to-end encrypted messaging and calling, powered by the open-source Signal Protocol. Signal says it cannot read users’ messages or listen to their calls, and privacy is built into the service rather than offered as an optional mode. Users can exchange text, voice messages, photos, videos, GIFs, and files over a phone’s data connection, helping them avoid SMS and MMS fees. The app also supports crystal-clear voice and video calls without long-distance charges, encrypted stickers, custom sticker packs, and group chats for friends, families, and coworkers. Signal states that it has no ads, affiliate marketers, or tracking. It is not tied to major technology companies and cannot be acquired by one. Its development is supported by grants and donations. Signal offers downloads for Android, iPhone and iPad, Windows, Mac, and Linux.

## Industries

- 🖥 Computers Electronics and Technology
- 🖥 Telecommunications _(under Computers Electronics and Technology)_
- 🖥 Computer Security _(under Computers Electronics and Technology)_

## Links

- [github](https://github.com/signalapp)
- [instagram](https://instagram.com/signal_app)
- [twitter](https://twitter.com/signalapp)

## Logos & icons

- logo _(primary)_ — PNG — [download](https://cdn.brandfetch.io/idU-ooAhOB/w/315/h/315/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1792094606272)
- icon _(primary)_ — PNG — [download](https://cdn.brandfetch.io/idU-ooAhOB/w/400/h/400/theme/dark/icon.png?c=1bxid64Mup7aczewSAYMX&t=1792094606427)

## Colors

| Name | Hex | Theme |
| --- | --- | --- |
| Blue | #202bfd | accent |
| Meteorite | #462274 | dark |
| Jordy Blue | #9dbbf8 | light |

## Fonts

- Inter — asset _(google)_

## Imagery

- banner _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idU-ooAhOB/w/1500/h/500/idEn9wC9B9.jpeg?c=1bxid64Mup7aczewSAYMX&t=1792094606653)

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_Source: <https://brandfetch.com/whispersystems.org>_
_See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._