Messaging · 2015 · Signal Foundation

Signal

Open-source messaging with end-to-end encryption

United States Indonesia Russia Pakistan Nigeria Egypt

Released by the Signal Foundation in 2015, it encrypts everything end-to-end by default and does not harvest address books — the pick for journalists and privacy-minded users.

Within this atlas it appears in 17 markets: United States, Indonesia, Russia, Pakistan, Nigeria, Egypt, Germany, Bangladesh, Türkiye, Iran, United Kingdom, Thailand, France, Italy, South Africa, Spain, Argentina.

Key facts

Developer: Signal Foundation
Launched: 2015
Platforms: iOS · Android · Desktop
Category: Messaging
Official website: signal.org

Where it is used

United States美国 324 million

Indonesia印度尼西亚 212 million

Russia俄罗斯 133 million

Pakistan巴基斯坦 117 million

Nigeria尼日利亚 107 million

Egypt埃及 96 million

Germany德国 79 million

Bangladesh孟加拉国 78 million

Türkiye土耳其 77 million

Iran伊朗 73 million

United Kingdom英国 68 million

Thailand泰国 65 million

France法国 63 million

Italy意大利 53 million

South Africa南非 51 million

Spain西班牙 46 million

Argentina阿根廷 41 million

Frequently asked questions

5 Q&A

What is Signal?

Signal is a messaging app developed by Signal Foundation and launched in 2015. Open-source messaging with end-to-end encryption. Released by the Signal Foundation in 2015, it encrypts everything end-to-end by default and does not harvest address books — the pick for journalists and privacy-minded users.

Who develops Signal?

Signal Foundation. The product launched in 2015 and runs on iOS · Android · Desktop.

In which countries is Signal popular?

What is the official website of Signal?

The official site is https://signal.org.

What kind of app is Signal?

It belongs to the messaging category, alongside 27 other apps in this index.

Sources

Updated 2026-11-12

Cite this pageWorld Sites & Apps. “What is Signal? Developer, launch year and countries”. 2026. https://abcvv.com/a/signal.html