V3 downloads roundup: Mozilla Thunderbird 5, updated VirtualBox, 1Password for Android and Opera 11.50

The previous seven days have seen a number of major updates, starting with Mozilla's popular freeware email client, Thunderbird. All popular mail formats are supported and the application ships with options for importing mail, address books and settings from Outlook, Outlook Express, Eudora and Communicator. The latest v5 benefits from an improved account creation wizard, tabbed windows, plus an improved add-ons manager and more. Although the feature revisions are fairly minor, it's definitely one of the best freeware tools out there for handling email. The portable version of Thunderbird 5 has also been made available, enabling users to launch the client via a USB device, taking your email, address book and account settings on the road.

The popular virtual operating system manager VirtualBox 4.0.10 is now available. This useful application enables you to run an application within a 'host' operating system. Handy for those who wish to run Windows applications using Mac OSX or Linux or vice-versa. The latest version ships with various improvements for OS X Lion and a number of minor fixes. 

Orbit Downloader 4.1.0.2 is an impressive download manager that swell as being free, ships with a number of options to improve your download experience whilst keeping download speeds to a maximum. You can also use Orbit to download Flash videos from online portals such as Youtube and DailyMotion.

Another interesting email client released this week is Postbox 2.5. Available for both Windows and Mac, this Well designed client is popular across both platforms. For Microsoft Outlook users there haven't been many legitimate contenders or alternatives, but Postbox boasts great functionality and a few interesting features which are definitely worth taking a look at. Some interesting new features include the ability to create groups of Unified Inboxes to separate work from personal messages and the new double-row Vertical Thread Pane View, which makes more efficient use of widescreen displays.

The major release of super-fast Opera 11.50 ships with a number of new features including new UI, Speed Dial extensions, password synchronisation and much more. This powerful browser, although not as widely used as alternatives such as Firefox, is the number one choice for many and was one of the first web browsers to benefit from tabbed browsing. 

We've put a whole host of new Android apps up this week. These include TripIt - Travel Organizer, which will enable you to create a detailer itineracy of where you are going and how you will get there. 1Password for Android is a decent password organiser that enables you to share the passwords with your desktop with your mobile. You can securely store your credit card numbers, PINs and other information without anyone else being able to access your data.

Finally, a new release of the hugely popular system cleansing tool, CCleaner 2.08. This freeware application enables users to easily remove all kinds of temporary files, from temporary internet files to old automatic back-ups from application such as Office XP and file sharing software. It also shakes out old entries from your computer's registry, such as uninstallers and invalid shortcuts.