[brettatoms]

Zodiac (https://github.com/brettatoms/zodiac) is a web framework/library that tries to fill a similar niche as Flask. It includes fewer batteries but supports extensions for extra functionality, see Zodiac Assets (https://github.com/brettatoms/zodiac-assets) and Zodiac SQL (https://github.com/brettatoms/zodiac-sql).

Zodiac itself does very little. Its mostly a preconfigured Ring app and a Reitit based router.

Full disclosure, I'm the author.