Compare software

Addy.ioFirefox Relay
Freemium

Free tier available, open source software formerly known as AnonAddy.

 Freemium

Free tier with a limited number of masks, paid plan for unlimited masks and a custom…

Web, Self-hosted, Browser extension Web, Browser extension
  • Unlimited aliases available for free
  • Open source, with the option to self-host your own instance
  • Backed by Mozilla, a long-standing name in browser privacy
  • Simple mask creation directly from the browser
  • Some advanced features are limited on the free tier
  • Requires trusting or self-hosting the forwarding infrastructure
  • Free tier limits the number of masks available
  • Deeper integration is tied to the Firefox browser ecosystem
Web application, Self-hosted, Browser extension Web application, Browser extension
Open source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.