PDFTextStream is a PDF text and metadata extraction library available for Java and .NET. It supports all versions of the PDF document specification (including v1.7, used by Acrobat 8, 9, and X), extraction of text encoded using double-byte character sets (including Chinese, Japanese, and Korean), decryption of documents encrypted using 40-bit, 128-bit, 256-bit, and variable bit length ciphers, and extraction of all document metadata provided by PDF documents (including form data, bookmarks, and annotations). Easy integration with Jakarta Lucene is included, as well as interactive form update capability.
Zambeel is an e-mail based archiving system that was designed to address the needs of people who move around frequently, but need to keep their files in one place. Files that need to be stored for future reference can be emailed to the system as an attachment. It then stores them as part of your personal archive, which can be searched and accessed later.