Mozilla Thunderbird gets Firefox-style tabs
This is the great thing about open source software. People build on each other’s ideas to come up with new ways to solve their problems. I don’t have the details, but it would be interesting to know whether they reused any of the Firefox tab code or whether the ability to look at the Firefox code made it easier to write the Thunderbird tabs. Please feel free to leave a comment if you have the answer to this question.