KLatexFormula 
A program to generate images of LaTeX equations for inclusion in non-LaTeX programs such as Powerpoint, Adobe Illustrator, etc.
https://klatexformula.sourceforge.io/
pylatexenc 
A simple python-based LaTeX parser providing latex-to-unicode and unicode-to-latex conversion.
https://github.com/phfaist/pylatexenc
LaTeX packages
A collection of LaTeX utility packages for scientific documents.
https://github.com/phfaist/phfqitltx/releases
You may also directly download the packages from CTAN: phfnote, phfcc, phfextendedabstract, phfthm, phfqit, phfparen, phffullpagefigure, phfquotetext, and phfsvnwatermark.
Bibolamazi
A program which allows you to prepare consistent BibTeX files for your LaTeX documents.