TeXCAD is a program for drawing or retouching {picture}s in LaTeX. It extends the original {picture} capabilities, even without any obligatory LaTeX package, class or style sheet. Core of TeXCAD is totally portable. A MS Windows version is available.
More information on... https://texcad.sourceforge.io/
Alire crate: https://alire.ada.dev/crates/texcad
Mirror: https://github.com/zertovitch/texcad
FREE!ship is a surface modeling program for designing ships yachts and boats. Subdivision surfaces are used rather than NURBS to give the designer the freedom to design ANY desired hullshape. Unfold surfaces, panel based hydrostatics, various exp formats
A webbased XML development toolkit to edit, validate and preview XML files. This program gives you a structured view of the XML data.
It has support for multiple XML formats: SVG, DocBook, XHTML and more. phpXIedit is written in PHP.
Program designed for creating comic strips. It has file, insert, update, delete (etc.) options for data handling. It is very easy to use: pick a picture, click two times, write some words and you have your comic strip.