* [React Query Builder v8.22.0](https://github.com/react-querybuilder/react-querybuilder) – Fully customizable query builder component for React with utility functions for various query languages.

* [React Query Builder v2.3.0](https://github.com/vojtechportes/react-query-builder) – Highly configurable TypeScript-based query builder for React supporting custom fields, theming, localization, and drag-and-drop.

* [NoQL - Not Only SQL v6.0.16](https://github.com/synatic/noql) – Converts SQL statements to MongoDB find queries or aggregation pipelines supporting MySQL and Postgres syntax.

* [Q3C v2.0.5](https://github.com/segasai/q3c) – PostgreSQL extension providing spatial indexing and fast spherical queries for astronomical coordinates.