# Signal

**Source:** https://www.startuphub.ai/startups/signal
**Profile type:** Startup

> End-to-end encrypted messaging and voice calling app focused on privacy and security.

## About

Signal is a free, open-source, cross-platform instant messaging service that prioritizes user privacy and security through end-to-end encryption. It offers secure text, voice, and video calls, as well as file sharing, for individuals and groups. Signal is developed and maintained by the non-profit Signal Foundation.

## Key facts

- **Slug:** signal
- **Website:** https://signal.org/
- **Location:** Washington, United States
- **Operating status:** Active
- **Sectors / tags:** Messaging, Privacy, Security, Consumer App, Communication, Open Source, Encrypted Communications
- **Social:**
  - Twitter: https://x.com/signalapp
  - GitHub: https://github.com/signalapp

## Frequently asked

### What does Signal do?

Signal is a free, open-source, cross-platform instant messaging service that prioritizes user privacy and security through end-to-end encryption. It offers secure text, voice, and video calls, as well as file sharing, for individuals and groups. Signal is developed and maintained by the non-profit Signal Foundation.

### Where is Signal headquartered?

Signal is headquartered in Washington, United States.

### What industry does Signal operate in?

Signal operates in Messaging, Privacy, Security, Consumer App, Communication, Open Source.

## JSON-LD

Structured data aligned with this page's `<script type="application/ld+json">` (included when the profile is server-rendered).

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "BreadcrumbList",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Home",
          "item": "https://www.startuphub.ai"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "Startups",
          "item": "https://www.startuphub.ai/startups"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "Signal",
          "item": "https://www.startuphub.ai/startups/signal"
        }
      ]
    },
    {
      "@type": "ProfilePage",
      "@id": "https://www.startuphub.ai/startups/signal#webpage",
      "url": "https://www.startuphub.ai/startups/signal",
      "name": "Signal - AI Startup Profile | StartupHub.ai",
      "description": "This is the official profile of Signal. Signal is a startup operating in Messaging and Privacy. End-to-end encrypted messaging and voice calling app focused on privacy and security. Headquartered in Washington, United States.",
      "dateModified": "2026-07-05T12:22:34.168+00:00",
      "mainEntity": {
        "@id": "https://www.startuphub.ai/startups/signal#organization"
      }
    },
    {
      "@type": "Organization",
      "@id": "https://www.startuphub.ai/startups/signal#organization",
      "name": "Signal",
      "url": "https://signal.org/",
      "logo": "https://cdn.startuphub.ai/storage/v1/object/public/entity-images/logos/2a7d4ba1-7d06-4fb6-a935-3e1639579dda-square.webp",
      "image": "https://cdn.startuphub.ai/storage/v1/object/public/entity-images/logos/2a7d4ba1-7d06-4fb6-a935-3e1639579dda-square.webp",
      "description": "This is the official profile of Signal. Signal is a startup operating in Messaging and Privacy. End-to-end encrypted messaging and voice calling app focused on privacy and security. Headquartered in Washington, United States.",
      "sameAs": [
        "https://x.com/signalapp",
        "https://github.com/signalapp",
        "https://www.startuphub.ai/startups/signal"
      ],
      "address": {
        "@type": "PostalAddress",
        "addressLocality": "Washington",
        "addressCountry": "US"
      },
      "knowsAbout": [
        "Messaging",
        "Privacy",
        "Security",
        "Consumer App",
        "Communication",
        "Open Source",
        "Encrypted Communications"
      ]
    }
  ]
}
```