Dia draws your structured diagrams: Free Windows, Mac OS X and Linux version of the popular open source program
How to Make This Block Diagram with LaTeX - TeX - LaTeX Stack Exchange
How to draw Block diagram like this in LaTeX? - TeX - LaTeX Stack Exchange
Block Diagram in LaTeX: Step-by-Step TikZ Tutorial - TikZBlog
TikZ - Chiu Yu Ko (高超禹)
View 29+] Make A Schematic Diagram Showing The Different Components Of The Circulatory Syst… in 2021 | Circulatory system, Human digestive system, Human respiratory system