Number one this week, Watermelon is a reactive database for React Native or React web applications.

It uses SQLite database for React Native or Loki (an in-memory database that runs in the browser) for the web.

It emphasizes performance on mobile devices and real-time updates, using the Observable pattern from the RxJS library.

At position number 2, Pigeon Maps is a super-light alternative to Google Maps, if you need to embed maps in your React application.