SiSU (Structured information, Serialized Units) is a lightweight markup based, text structuring and publishing framework (that features granular search). With minimal markup of a plaintext file, it produces: plain-text, HTML, XHTML, XML, ODF, LaTeX, PDF, and populates an SQL database at an object/paragraph level for granular searches. Prepare documents using your text editor of choice, then use SiSU to generate the desired output formats. SiSU is controlled from the command line.
Aigaion is a Web-based shared bibliography manager built on PHP/MySQL. It is based on the BibTeX format, but has support for other formats as well. Some of its key features are extensive support for organizing a bibliography in a topic structure, personal and public annotations on each publication, multi-user support, easy import/export, and an intuitive user interface.
refbase is a Web-based bibliographic manager that can import and export references in various formats (including BibTeX, Endnote, ISI, RIS, PubMed, MODS XML, OpenOffice, and Word 2007 XML). It can make formatted lists of citations in HTML, RTF, PDF, or LaTeX, and offers powerful searching and RSS support. Its OpenSearch and SRU/W services and support for unAPI and COinS metadata allow for easy access by clients and search engines.
RefDB is a reference database and bibliography tool for SGML, XML, and LaTeX documents. Command-line tools allow interactive or scriptable access to the data which are stored in a SQL database. RefDB can also be accessed through a Web interface, a SRU interface, or via editor extensions (Emacs/vim). Libraries for Perl and PHP are available for programmers. RefDB provides sophisticated character encoding handling, using Unicode by default.
Papyrus is a XML-based reporting langauge for PostgreSQL and MySQL. It allows you to generate well-formatted reports in LaTeX, PDF, PostScript, HTML, ANSI, and XML. The XML is expressed in a formatting-oriented style to allow you to develop a wide range of reports. SQL is then embedded into the report to give you the desired data. Papyrus is commandline-driven, and data arguments can be passed into the report. Equations and expressions can also be carried out on data.
ChordDB is a Web-based database front-end for keeping track of and typesetting chord files (a.k.a. guitar fake sheets). It accepts chord and chordpro files as inputs, and creates output sets in a large variety of formats (PDF, text, chordpro, LaTeX) with the help of pdftex and the LaTeX Songbook style. Songs are stored internally using SQLite, so there is very little need for configuration.