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Firefox Nightly 45.0a1 (64-bit)

Get the latest, untested version of Firefox while it’s still warm

by Nick Peers

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Based on 3 ratings
License: Open Source
Operating Systems: Linux, Windows 10, Windows 7 (64 bit), Windows 8, Windows Server, Windows Vista (64 bit), Windows XP
Languages: English
Software Cost: Free
Date Updated: 10 November 2015
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Downloads To Date: 114335
Developer: Mozilla (Firefox Nightly)
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Firefox 45.0a1 (Nightly)
Not for the faint of heart – we recommend running Firefox Nightly in a test bed environment only.

Do you ever wonder how programs make it through the testing process? Mozilla’s decision to speed up development of the Firefox browser gives users an unique opportunity to get a close look at this process. But despite the much-vaunted emergence of developmental builds like Firefox Beta and Firefox Aurora for wider public consumption, there’s still a lot of testing to be done even before a version of Firefox reaches alpha, or Aurora, status.

This testing is done using nightly builds – developers make changes to the code during the “day”, and then at “night” a fresh build is uploaded to the Mozilla servers for developers and hardcore enthusiasts to test. It’s important to know at this point that many of the code changes have not been tested – they’ve been incorporated into the main build, but that’s it. It's now up to the hardy souls who run Firefox Nightly to try out the changes and report back on any stability issues they encounter.

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 45.0a1. You can see what's planned for this version by visiting the Fixtures/Release Tracking page, although note that most of these features are not implemented in Nightly.


Most people should leave Firefox Nightly well alone, but if you’re experienced enough and dead keen to contribute to Firefox’s development, it’s worth checking out – with care.

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WhatsApp Messenger 2.12.11

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

Version 2.12.11 brings:

• Links that you share or receive will now include a rich preview. When sending a link, you have the option to not include a rich preview.
• Additional 3D Touch features: You can now quickly Peek and Pop chats.
• Redesigned Settings tab. 
• You can now view all your starred messages across all your chats in Settings — Starred Messages.