PDF OCR X is a simple utility for Mac OS X that allows users to convert their PDFs and images into text or searchable PDFs using an intuitive drag-and-drop interface. It uses advanced OCR (optical character recognition) to extract the text, even if that text was contained inside an image, which is common for PDFs produced from a scan-to-PDF function. Language packs are available for over 20 languages including French, German, Italian, Spanish, Chinese, Japanese, Portuguese, and more.
Usage is as simple as dragging your PDF or image icon into the PDF OCR X tray, and selecting your output settings. You can choose between text output and searchable PDF output (which embeds the text directly into the PDF file).
The Community Edition is limited to single-page PDFs and images. For multi-page PDFs you will need to upgrade to the Enterprise edition ($29.99)