Nhost is an open-source backend-as-a-service that gives developers a complete application backend without building and operating the pieces themselves. Each project comes with a managed PostgreSQL database, an instant GraphQL API generated over that database by Hasura with role-based permissions, authentication supporting email and password plus many social and passwordless providers, file storage with image transformation, and serverless functions written in JavaScript or TypeScript for custom logic and webhooks. Because the API is generated from the database schema and is GraphQL-first, front-end developers get a typed, real-time data layer to build against quickly, and the Nhost CLI runs the whole stack locally so development mirrors production. Nhost is one hundred percent open source, so teams can self-host the entire platform to control their infrastructure and avoid lock-in, or use Nhost Cloud for a managed setup with backups, scaling, and observability. It is positioned as an open Firebase alternative for developers who prefer PostgreSQL and GraphQL over a proprietary NoSQL store, and it integrates with front-end frameworks and hosting platforms through official client libraries and deploy templates. Nhost offers a free tier for getting started and prototypes, with paid plans that add dedicated resources, higher limits, production features, point-in-time recovery, and support as an application grows into a real product.