Mozilla Thunderbird

Mozilla Thunderbird is a free and open-source cross-platform email client, personal information manager, and news client developed by the community and a subsidiary of the Mozilla Foundation. The project was originally launched in 2004 by the creators of the Firefox browser as a dedicated mailing application.

Thunderbird's development is a global effort, with its code being contributed to by developers from multiple countries including the United States, Germany, and many others across the globe. It is built using the Gecko rendering engine and various open-source technologies, ensuring that no single location can be credited as its sole place of manufacture.

Today, the brand is owned by the MZLA Technologies Corporation, which is a wholly-owned subsidiary of the Mozilla Foundation. Based in the United States, this structure allows the project to operate with more commercial flexibility while maintaining its core mission of promoting an open and accessible internet for all users.