Thunderbird
Open sourceFree alternative to Outlook · MZLA Technologies
4.48.7K ratings
WindowsLinuxMac
Desktop email, calendar, and chat client from Mozilla.
About this app
Mozilla Thunderbird is a free email client with calendar, contacts, and add-ons. It is the usual desktop alternative to Microsoft Outlook for people who want to keep mail local.
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Thunderbird is a open source MPL-2.0 project from MZLA Technologies. Use it when you want a legitimate Outlook alternative instead of a paid license or an unofficial copy.
- Thunderbird
- Open source · MPL-2.0
- Outlook
- Paid / proprietary