Download Firefox 10.0a1 (Nightly)

Firefox 10.0a1 (Nightly)

Download Firefox 10.0a1 (Nightly) | The Nightly build will install alongside other Firefox builds, specifically the Aurora build and the Beta/Stable build. However, it will share access to existing Firefox settings, meaning there is a risk you could lose these if something catastrophic was to happen.

With this in mind, we’d strongly recommend you only install Firefox Nightly on a test machine, or in a virtual environment such as that provided by VirtualBox. Once done, you can safely road test it, secure in the knowledge you’re not going to screw up your main computer by doing so.

Nightly introduces Firefox 10.0a1, although no release notes or public release information exists. Many v10 features are not included in the first Nightly alpha, but it's interesting to note that both Windows and Linux builds include a 64-bit version of Firefox as well as the default 32-bit version.

The forthcoming UI re-design isn't included in this build, but can previewed by installing a separate Nightly build, Firefox 10 UX, instead. If you're interested in bleeding edge Firefox development, keep one eye on Mozilla's Burning Edge blog.

Download Firefox 10.0a1 (Nightly) for Windows
Download Firefox 10.0a1 (Nightly) for Linux
Download Firefox 10.0a1 (Nightly) for Mac