PDF is a closed document format which allows you to read and – sometimes – print PDF files, but that doesn't allow you to edit them in any way. If you aren't willing to acquire an Adobe Acrobat license to edit just a single PDF file, you will probably be interested in a tool such as Smart PDF Converter Pro. It allows you to convert your PDF documents into many editable formats, such as DOC and XLS.
The Pro edition of the program introduces a number of extra tools and features, as compared to the standard edition. While the latter simply allows you to convert PDF files into other formats, this is only one of the functions provided by the former. It also allows you to convert documents in various formats back into PDF, and includes a complete set of extra PDF tools. The program supports converting the following formats from and into PDF: DOC (MS Word), XLS (MS Excel), PPT (MS PowerPoint), HTML, TXT (Plain text), RTF, JPEG, and TIFF. Besides, this tool also supports batch conversion in both directions. It is worth mentioning that the program provides you with full control over the output settings, regardless of the format selected.
As for the extra PDF tools, they are all organized in groups on separate tabs. These tools include PDF splitting and merging; page extraction, insertion, and removal; digital signing; PDF encryption; password and permissions setting; watermark insertion, and others. Each of these tools runs independently on a separate window. Besides, I must mention that the program provides a built-in PDF viewer and navigator in all the functions where it may be required.
In short, Smart PDF Converter Pro offers a complete set of tools and functions, which allow you to perform practically all imaginable tasks to your PDF documents. Although its price is almost twice as much as the price of the Standard edition, the quantity and quality of the extra tools provided make it worth each cent.