OPSWAT has announced the availability of Metascan Online for Firefox, an addon which allows the browser to scan downloads, websites and web connections for threats.

Checking a link is as easy as right-clicking it and selecting "Scan with Metascan Online". If the link is a file, then it is uploaded to VirusTotal competitor Metascan Online and checked with 40+ commercial antivirus engines. A detailed report will tell you which -- if any -- are detected as a threat.

Krzysztof Kowalczyk has released SumatraPDF 3.0, a major new release of his lightweight and portable PDF and eBook reader for Windows.

Version 3.0 adds support for tabs, allowing users to view multiple documents side-by-side, plus extends support for eBooks and adds a new document measurement tool to the user interface.

Avira has announced the arrival of its 2015 product line, including Avira Free Antivirus, Avira Antivirus Pro and Avira Internet Security.

The main highlight is a "superior" engine to improve PC protection, along with enhanced Android and iOS apps.

The free, open-source flight simulator FlightGear 3.2 has been updated to version 3.2 with a stack of new and enhanced features.

A more realistic JSBSim flight dynamics model now includes support for ground effects, including bumpiness, solid-ground detection and adjusting of friction factors. (The official release notes point out that you can’t ride on water any more, either.)

It's no secret that working with a camera's RAW images can improve photo quality, as you’re accessing all the information from the original shot.

But as RAW files are also huge, and often slow to render (if your preferred software supports them at all), it's no surprise that most photographers stick to JPEG.

To coincide with the release of OS X 10.10 Yosemite, Apple has unveiled iTunes 12.0.1, the first major release of its media manager and player for almost two years.

The new release debuts a flatter, more modern look designed to tie in with Yosemite, which includes a new red app icon and some redesigned and restructured elements. The update also adds support for some iOS 8/Yosemite-only features such as Family Sharing.

IObit has released Driver Booster 2.0, a major update for its free driver updater.

An expanded driver database, now held online, and the ability to scan for unplugged devices should ensure the program finds even more updates.

AstonSoft has announced the release of EssentialPIM Pro 6.0 and EssentialPIM Free 6.0 for Windows, and EssentialPIM 3.5 for Android, the latest editions of its popular information manager.

The Android build sees significant improvements, including Contacts support and the ability to set start and due times, as well as dates, for to dos.

Berlin-based developer O&O Software has announced the release of O&O DiskImage 9, its one-stop drive imaging and file/ folder backup tool.

The most obvious change this time is the completely redesigned Start screen, where the program’s core backup and recovery functions are accessed via six chunky icons.

Mozilla has released Firefox 33.0 FINAL for desktop, with Firefox for Android 33.0 due to follow in the coming days.

Like the previous release, the desktop build of Firefox 33 boasts no major new features, but its Android counterpart gains vastly improved tab management tools as well as the ability to send videos to both Chromecast and Roku devices.

Malwarebytes Corporation has released Malwarebytes Anti-Malware 2.03, a significant update for its anti-malware tool.

A new option to run scans at a lower priority (Settings > Advanced Settings > "Reduce priority…") may reduce their impact on other applications. This is a good idea in principle, although we noticed it had no effect whatsoever on our test system, with both process and I/O priorities remained stubbornly unchanged.

WindowsX has released the Windows 10 UX Pack 1.0 and Windows 10 Transformation Pack 1.0, tools that skin Windows and -- in the case of the Transformation Pack -- patch system files to provide a look and feel that’s close to the current preview version of Windows 10.

Of the two, the UX Pack is the preferred choice for those running Windows 7 or later, as it makes changes without patching system files; however, the Transformation Pack does work with Vista and XP as well as later versions of Windows.

Malware causes all kinds of PC problems, and they don’t always go away once the threat has been removed. You might still find you can’t run certain programs, web browsers don’t work properly, there are network issues, and more.

You can’t simply turn to System Restore or your last backup, either: restoring old files might reinfect your PC, and make your problems even worse.

Running multiple PC programs side-by-side isn’t difficult, but can require a little preparation as you move, resize and reorganise each window.

TaskSpace offers an interesting alternative, running multiple programs in a single desktop window, and so making them much easier to manage.

ChrisPC has released ChrisPC DNS Switch 2.0, a significant update for its free DNS selection tool.

The core DNS list has been updated, and in a click or two can set your PC to use OpenDNS, Google Public DNS, Comodo Secure DNS, Norton, Yandex, BlockAid, DynDNS and many more. There are 34 servers in total and you can add another 15.