CHET-C, or Chapel Hill Electronic Text-Converter, is a browser based software tool designed to convert digital texts that employ standard epigraphic conventions such as the Leiden sigla into EpiDoc-compliant XML files.

The tool can be accessed online at http://www.stoa.org/projects/epidoc/stable/chetc-js/chetc.html. Fragments of epigraphic text using standard sigla (eg Leiden convention markup) are pasted into the tool and Epidoc compliant XML is generated.

Prior versions exist (MSAccess + VBA and Java, both now deprecated) for use by those without stabel web access or who wish to customise the underlying regular expressions to process non standard sigla

A cross-platform XML editor that may be used to create and validate XML documents and associated schema. It fully supports XSL (both XSLT and FO), DTD, Schema (Relax RNG and W3C), Database, XQuery and CSS. OXygen XML Editor works with all XML-based technologies, including XML databases, XProc pipelines, and web services and comes with ready-to-use DITA, DocBook, TEI, and XHTML support.

Frequently updated and supported, and with a very large set of features, this software tool has proved popular with digital humanists.