I just saw this retweet by Kepano, https://x.com/kepano/status/1718008501589639321, about a professor that wrote a math textbook in Obsidian. Looks pretty neat.
I wonder what plugins they are using.
UPDATE: The plugins can be seen here at the Github repo of the vault, https://github.com/RobertTalbert/mth225-vault/tree/main/.obsidian/plugins.