Dear John, I recommend Xeno: https://gitlab.com/migamake/xeno It was released on Hackage some time ago by Chris Done, then maintained by Marco Zocca. It was benchmarked against fastest parsers in both Haskell and other languages: * https://arxiv.org/abs/2011.03536 * http://neilmitchell.blogspot.com/2016/12/new-xml-parser-hexml.html It allows you to use SAX and DOM-style processing. It has an awesome memory efficiency that is surpassed only by PugiXML parser (which builds DOM in place, but occasionally crashes). It does not support some XML features (namespaces, entity normalization etc.), but these can be added as postprocessing after the DOM is built. It is maintained. And there is a yet unreleased version that can be used to parse HTML documents and documents that are not well formed. Disclosure: I am current maintainer. -- Cheers Michał J. Gajda