Robuta

https://asciidoctor.org/
A comprehensive and user-friendly publishing toolchain for the AsciiDoc writing format. Converts AsciiDoc to HTML5, DocBook, PDF, and other formats.
open sourcetext processorasciidoctorfastpublishing
https://www.sri.com/publication/artificial-intelligence-pubs/fastus-a-finite-state-processor-for-information-extraction-from-real-world-text/
Enabling interactive, accurate, and dynamic 3D visualizations of geospatial data that can be disseminated over the Web is becoming a reality.
finite stateinformation extractionprocessorreal
https://troff.org/
text processortrofforgtypesetters
https://github.com/kefirfromperm/kefirbb
A flexible Java text processor. BB, BBCode, BB-code, HTML, Textile, Markdown, parser, translator, converter. - kefirfromperm/kefirbb
text processorgithubflexiblejavabb