Ruby gem that bundles a collection of common SQLite extensions (IP address handling, math, regex and more). On Rails main, extensions to load can be listed in database.yml. A broader repository of ~100+ SQLite extensions exists separately — even including extensions that call OpenAI from SQL. The 'sqlean' text extension (providing Unicode-aware case functions that can be aliased to built-ins) is what Wrona used to get proper case-insensitive comparisons after migrating from Postgres.