EmPy is a system for embedding Python expressions and statements in template text. It takes an EmPy source file, processes it, and produces output. This is accomplished via expansions, which are special signals to the EmPy system and are set off by a special prefix (by default the at sign, '@'). It can expand arbitrary Python expressions and statements in this way, as well as a variety of special forms. Textual data not explicitly delimited in this way is sent unaffected to the output, allowing Python to be used in effect as a markup language. Also supported are callbacks via hooks, recording and playback via diversions, and dynamic, chainable filters. The system is highly configurable via command line options and embedded commands.
ClearSilver is a high-performance, powerful, and language-neutral HTML template system. It enforces a separation between presentation code and application logic which makes writing, debugging, and maintaining Web pages easier. It can be used from C/C++, Python, Perl, Java, and Ruby. It runs on Windows and Unix.
Pysite is a tool written in Python to generate Web sites based on the contents of files in a given directory tree. It crawls through a specified directory tree looking for files matching certain configurable patterns (like intro, title-fr, and this-is-another-page-body), building up an output Web page for each set of files found. It features valid XHTML output, support for multiple language output, simple hierarchical templates (just put a template in a directory and it will be used for all subdirectories), and basic plaintext to XHTML conversion.
Xapian is a search engine library, scalable to collections containing hundreds of millions of documents. It's written in C++ with bindings for Perl, Python, PHP, Java, Tcl, C#, Ruby, and Lua. It is a highly adaptable toolkit that allows developers to easily add advanced indexing and search facilities to their own applications. It supports the Probabilistic Information Retrieval model and also a rich set of boolean query operators. Omega is a Web search application built upon the Xapian library. It can index a Web server's document tree (including HTML, PDF, OpenOffice, MS Word/Excel/Powerpoint/Works, WordPerfect, RTF, PS, etc.), or data exported from arbitrary sources (e.g. SQL databases).
EZ Reusable Objects (EZRO) is a Web application that can be used by non-technical staff to manage content as "objects." Content objects containing text, video, and audio can be shared, modified, and re-styled to appear via a traditional Web site, an on-line course, an innovative "Coach," or as a community of interest site. It is highly scalable and can be used for public Web sites, secure environments, and private intra/extranets.
Rx4RDF is a set of technologies designed to make W3C's RDF less complex and easier to use. It includes RxPath, which enables one to use familar XML technologies like XPath, XSLT, and XUpdate to query, transform and update an RDF model, Raccoon, an application server that uses an RDF model for its data store and RxPath to translate arbitrary requests to RDF resources, and ZML and RxML, alternative text formats for XML and RDF that were designed to allow novices to write XML and RDF with (nearly) the same ease as a Wiki entry.