CATMaker is an interesting tool for medical text. It helps generate a summary of a case and a "bottom line" assessment.
http://www.cebm.net/index.aspx?o=1216
It's produced by the Center for Evidence Based Based Medicine (CEBM). It might be open source.
Summary tools can be very helpful when used with search engines. They can help give a better summary in a results list, or when used at index time, give the search engine a smaller, more relevant set of text to search over.
PDFBox is an API for extracting and highlighting text from Adobe Acrobat documents (AKA PDF files).
Text extraction: (from their site)
PDFBox is an open source Java PDF library for working with PDF documents. This project allows creation of new PDF documents, manipulation of existing documents and the ability to extract content from documents. PDFBox also includes several command line utilities.
PDF Highlighting (from their site)
There are cases when you might want to highlight text in a PDF document. For example, if the PDF is the result of a search request you might want to highlight the word in the resulting PDF document. There are several ways this can be achieved, each method varying in complexity and flexibility.
We've recently discovered PDFMiner, a PDF parser and analyzer tool written entirely in Python. Actually, PDFMiner is a suite of tools including a parser, a text renderer, and tools for extracting text. Yusuke Shinyama, who is at NYU, has brought together a number of capabilities in the form of two Python programs: pdf2txt and dumppdf. PDFMiner also supports multi-byte languages with an additional map file. The progams let you find the precise locaiton of test within a PDF, which is a major advantage over many other PDF tools you'll find.
PDFMiner even has a cool PDF to HTML conversion demo page to see what kinds of things you can do with PDFMiner, although some of the PDFs we tried did not display with true fidelity. Nonetheless, the tools provide insight into the kinds of things you 
may be able to do with PDF files in your custom pipeline stage, in the OPpenPipelin, or just for poking around.
The Subversion repository is maintained at Google's code.google.com, and you can download the PDFMiner source from www.unixuser.com.
This looks like a really nice tool for database administrators.
Although this download is free, their site has a lot of other cool stuff (not free) for ETL ("Extract, Transform, Load") and database conversion tools.
http://www.dbsoftlab.com/index.php/Freeware/Database-Browser.html
