Mozilla Sunbird

is a cross-platform calendar application, built upon Mozilla Toolkit. Sunbird is a standalone calendar application. It doesn’t need another client application to run (small memory requirements). Because of its standalone nature, Sunbird does not offer any kind of tight integration with an e-mail application, such as Mozilla Thunderbird.

If you need integration with Thunderbird you can use Lightning (the calendar extension for Mozilla Thunderbird). It offers calendaring features directly in the Thunderbird User Interface. Further integration features, such as e-mail invites or address book integration are planned for future releases.

Firefox 3 Beta 5 is a developer preview release of Mozilla’s next generation Firefox browser and is being made available for testing purposes only. These beta releases are targeted to Web developers and the testing community to gain feedback before advancing to the next stage in the release process.

Firefox 3 Beta 5 includes more than 750 changes from the previous beta, improving stability and web compatibility, providing platform and user interface enhancements, and resulting in the fastest Firefox ever. Many of these improvements were based on community feedback from the previous beta.

Mozilla provides Firefox 3 Beta 5 for Windows, Linux, and Mac OS X in a variety of languages. You can get the latest version of Firefox 3 Beta 5 here.