Oldschool PC fonts
@ https://int10h.org/oldschool-pc-fonts/
Archive and exploration of fonts from DOS-era PCs.
Text layout is a loose hierarchy of segmentation
@ https://raphlinus.github.io/text/2020/10/26/text-layout.html
An overview of how complex text layout systems work.
Text Rendering Hates You
@ https://faultlore.com/blah/text-hates-you/
Exploration of the complexity of how different software achieves rendering different fonts.
Modern text rendering with Linux: Overview
@ https://mrandri19.github.io/2019/07/24/modern-text-rendering-linux-overview.html
Starting point for understanding the Linux text rendering pipeline.
Font forge
@ https://fontforge.org/en-US/
Free, open source font editor, with a large user community.