Apple Inc. released a security update named ‘Security Update 2010-005′ to fix a critical PDF vulnerability on Mac OS X. The security patch addresses ‘heap buffer overflow’ when CoreGraphics handles PDF files.

SmileOnMyMac has released an upgraded version 4.7 of PDFpen, its PDF editing software for Mac OS X. The upgraded version includes support for Evernote, a multi-platform notetaking and archiving service.

Monkeybread Software announced Combine PDFs 5.1, an update to its PDF merge and split tool for Mac OS X. Combine PDFs 5.1 includes numerous new improvements with a focus on ease-of-use and exploiting the powerful PDF libraries built-in Mac OS X.

Solid Documents announced its new tool, Solid PDF to Word, for conversion of PDFs into editable MS Word documents and other commonly used formats. Solid PDF to Word is presently in its beta stage and works on Mac OS X 10.5 or higher.

Do you know that if you are using MAC OS X, you don’t need a PDF reader to view your PDF files? If you want to discover this secret, read on…

Are you using MAC OS X and Firefox and would like to view PDF documents directly through Firefox? Then this article is for you. In order to do that using Firefox, we need an extra “Add-on” for Firefox, since this feature does not come built-in with your Firefox installation. The “Add-on” that we need for this task is called: Firefox PDF Plugin for Mac OS X 1.1.3.

Monkeybread Software announced Combine PDFs 5.0, an updated version of its PDF merge/split software. The new version includes the support for Quartz filters which allows the users to add effects to the content while writing a PDF document.

Yep 2 is a software from Ironic Software for managing PDF documents on Mac OS. Yep 2 also provides additional capabilities such as scanning and creating PDF documents.

ABBYY, a provider of document recognition, data capture and linguistic software, today revealed their latest FineReader Express Edition for Mac now supports Mac OS X v. 10.6 Snow Leopard. This FineReader Express Edition for Mac from ABBYY’s supports conversion of various types of PDFs including image-only or scanned PDFs that can be transformed into searchable PDF format, ideal for archiving purposes.

I’m a big fan of using metadata to organize files because it means I don’t have to use an inefficient hierarchical folder tree. Unfortunately for some of us, this idea seems to be gaining more traction on the Mac OS X platform, than it is on the Windows platform. In a series of posts last year, theAppleBlog looked at how to effectively use metadata to organize files in Mac OS X.

Using Metadata Effectively in OS X
Metadata in OS X: Part Two

The Metadata Screencast: Part Three
Answering Metadata Screencast Questions
Essential Metadata Tips

Useful Fruit software, a relatively new company run by Chad Sellers, a former system-level security developer who worked in the Linux environment —  has just released their Mac-based software, Pear Note — which is designed “… to help users take and understand notes”.
In detail, Useful Fruit say that:
Pear Note records audio and/or video while you take your notes, so later you can find what was being said when you typed something. 
and has key features as follows:

Records keystrokes, audio, video, and slides
Search to help you find your notes quickly
Instantly jump to anywhere in …

Improved PDF Annotations; Relevancy Ranked PDF Search; and PDF Manipulation in Preview…