* [fast-json-stringify v7.1.0](https://github.com/fastify/fast-json-stringify) – JSON Schema-based library generating faster stringify functions for small payloads.

* [env-schema v8.0.1](https://github.com/fastify/env-schema) – JSON schema–based environment variable validator with Ajv, supporting optional loading from .env files via Node.js parseEnv.

* [fluent-json-schema v6.0.2](https://github.com/fastify/fluent-json-schema) – Fluent API that generates JSON Schema draft-07 definitions for Node.js and browser, with runtime errors and TypeScript typings.

* [fastify-plugin v6.0.1](https://github.com/fastify/fastify-plugin) – Helper that marks and annotates Fastify plugins, enforces minimum Fastify version, and exposes plugin metadata.

* [avvio v9.3.1](https://github.com/fastify/avvio) – Reentrant, graph-based asynchronous bootstrapping for Node.js applications that ensures correct plugin load order and error handling.

* [@fastify/deepmerge v3.2.2](https://github.com/fastify/deepmerge) – Deeply merge enumerable properties of multiple objects into a new object without mutating inputs.