For the user I write quite a number of LaTeX packages, some focussed on chemistry, others more general. They are all available on CTAN:

  • achemso: Support for submissions to American Chemical Society journals
  • beamer: A LaTeX class for producing presentations and slides
  • biblatex-chem: Chemistry styles for biblatex
  • biblatex-phys: A biblatex implementation of the AIP and APS bibliography style
  • biblatex-ieee: biblatex implementation of the IEEE bibliography style
  • biblatex-nature: biblatex implementation of the Nature bibliography style
  • biblatex-science: biblatex implementation of the Science bibliography style
  • chemstyle: Schemes and style for chemistry
  • etoolbox: e-TeX tools for LaTeX
  • notes2bib: Integrating notes into the bibliography
  • pgfopts: LaTeX package options with pgfkeys
  • rsc: BibTeX styles for Royal Society of Chemistry and Wiley journals
  • siunitx: A comprehensive (SI) units package
  • trivfloat: Quick floats in LaTeX

The development work for all of these is done on GitHub: report any issues there! Keeping all of those up to date is sometimes a challenge, but I hope I do a reasonable job.