Alexandria is an archive system for large data amounts. Suitable for inhomogenous collections of books, media files, art items and other artifacts. Main focus is on easy usage, small executable file and portability.
Perl cgi (with ajax interface) which scans your pdf library for embedded metainformation, allows you to edit this information and to keep it in sync with your bibliographic database (currently the format used by bibus).
Monolith (lith) is a tiny, java-based embedded file-system like implementation. It allows you to store and retreive multiple sets of named data in a single file and access it without the speed costs typically associated with file archives.