Freeware

Firefox 20.0.1 “Windows-only update to handle issues around handling UNC paths”.
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Download or update from within Chrome.
via the Google Chrome blog:

The Stable channel has been updated to 26.0.1410.63 for Mac and Linux; 26.0.1410.64 for Windows and Chrome Frame. This release contains stability improvements, and a new version of Adobe Flash.

Thunderbird 17.0.5 released. Security fixes (And a bugfix).
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CCleaner 4 (slim) has been released:
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Firefox 20 released.
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Along with the usual security and bugfixes, Firefox 20 adds:
Per-window Private Browsing.
New download experience.
Ability to close hanging plugins, without the browser hanging

VirtualBox 4.2.10 released:

Oracle today released VirtualBox 4.2.10, a maintenance release of VirtualBox 4.2 which improves stability and fixes regressions.

Changelog
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All VirtualBox 4.2.10 downloads
VirtualBox 4.2.10 for Windows hosts
VirtualBox 4.2.10 for Linux
VirtualBox 4.2.10 Extension Pack
VBoxGuestAdditions_4.2.10.iso

Dropbox updated to v2.0. Adds drop down menus, security & bugfixes.

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Dropbox is a free service that lets you bring all your photos, docs, and videos anywhere. This means that any file you save to your Dropbox will automatically save to all your computers, phones and even the Dropbox website.
Dropbox also makes it super easy to share with others, whether you’re a student or professional, parent or grandparent.

TeamViewer version 8.0.17396 is out:
-Fixed a problem where users can’t confirm UAC-Dialogs in QuickSupport
-Other minor improvements and fixes
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Thunderbird 17.0.4 released. Security fixes.
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