Regardless of your skillset, we’re sure there is something you can add to our community and project. We invite anyone to come and participate in the creation of Thunderbird. But the fun is not just for programmers! Thunderbird is created by a community of designers, translators, documentation writers and support people in addition to developers. Thunderbird is open source software, meaning that anyone can inspect, modify, enhance it, and share it. Thunderbird is created by an online community of volunteers.