Mozilla Contacts for Windows

Used Mozilla Contacts for Windows?

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Editors’ Review

Download.com staffMarch 12, 2026

The Contacts add-on unifies local and web-based address books into a single database for Thunderbird. It integrates social networking contacts and offers granular user control over data sharing with web content and browser extensions.

Pros
- Integrates local and web-based address books.
- Consolidates all user contact data into a single database.
- Data accessible by browser extensions and web content.
- Requires explicit user permission before data use.
- Allows granular control over disclosed fields and records.
Cons
No Cons available

Mozilla Contacts for Windows

Used Mozilla Contacts for Windows?

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Full Specifications

GENERAL

Release: November 30, 2010

Latest update: March 12, 2026

Version: 0.4.2

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows Vista
Windows XP
Windows 7
Windows 10

Additional Requirements: Mozilla Firefox 3.6 or later.

POPULARITY

Total Downloads: 2,423

Downloads Last Week: 0

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Developer’s Description

By Mozilla Labs

Enhance Thunderbird's address book with contacts from your social networking sites.

The Contacts add-on integrates with local and web-based address books to bring all of a user's contact data into a single database, which can then be used by browser extensions or web content. The user must grant permission before any content can be used by a website, and can choose exactly which fields and personal records to disclose.