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Learn why SEO Testing Tools is free?
SEO Testing Tools is free for users because vendors pay us when they receive web traffic and sales opportunities. SEO Testing Tools directories list all vendors—not just those that pay us—so that you can make the best-informed purchase decision possible.

499.46K reviews

275.62K followers

Signal is a privacy-focused messaging app that combines top-notch security with modern IM features. It offers end-to-end encryption, ensuring your conversations remain private and secure, earning global praise for its privacy-respecting technologies.

LICENSE MODEL

Free

PRODUCT MODEL

Open Source

PLATFORMS

  • Windows
  • Online
  • Linux
  • Android
  • iOS
  • iPad
  • iPhone
  • Android Tablet
  • Flathub

Signal CATEGORIES ON SEOTESTINGTOOLS.COM

Instant Messenger Encrypted Chat App

Signal FEATURES

  • End-to-End Encryption
  • Ad-free
  • Private messaging
  • Dark Mode
  • GPLv3
  • Client side encryption
  • Encrypted calls

Top Open Source apps of the week

Learn More About Open Source

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Signal