| Thunderbird | Mozilla’s Thunderbird 2 email application is more powerful than ever. It’s now even easier to organize, secure and customize your mail. | Linux Windows Mac OSX |
| SeaMonkey | The SeaMonkey project is a community effort to deliver production-quality releases of code derived from the application formerly known as "Mozilla Application Suite". Whereas the main focus of the Mozilla Foundation is on Mozilla Firefox and Mozilla Thunderbird, our group of dedicated volunteers works to ensure that you can have "everything but the kitchen sink" — and have it stable enough for corporate use. | Linux Windows Mac OSX |
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