Open Source Interpreters

eXist-db is a native XML database featuring efficient, index-based XQuery processing, extensions for keyword search, XUpdate support, XSLT support, XForms support, REST and tight integration with existing XML development tools. Moved to Github - https://www.github.com/exist-db/exist

DBIx::MyParse is a Perl module that makes the MySQL SQL parser engine available to Perl applications.

Cigol (logic, spelled backwards) is a deductive logic solver. It can be embedded inside a parent program or used from the command line. It has absolutely no relationship to Tom Mitchell's book on Machine Learning.

The Generic Universal MUMPS Project (GUMP) has the purpose of providing an Open Source Implementation of ANSI X11 (MUMPS) suite of Standards

A tool to query arrays in memory using SQL. It groups the arrays in tables and returns arrays as result set. It can be used in spreadsheets, as a script language library and everywhere is needed an interactive tool to query data in memory.

The Open Design and Integration Environment is a toolbox of C and TCL code designed to introduce people to programming in a friendly way. It is also designed to be robust enough to novices to develop useful applications.

idyuts is \"I Dare You to Use This Shell\"; a pre-hibernate approach to replacing an ORM written with jython functors into a pure-Java language command pattern. The \"pipeline codegen artifacts\" are simple IoC templates, and trivial to adapt

The UniXML library is intended to be an extremely portable XML DOM parser library, completely OS and C compiler independent.

Xcerpt is a Query and Transformation Language for XML and Semistructured data. Instead of the navigational approach of XPath-based languages like XSLT or XQuery, Xcerpt uses patterns for querying and is based on concepts of logic programming like unifica