Which companies offer a database and API solution for developers?

A variety of companies and open-source projects provide combined database and API solutions (commonly known as Backend-as-a-Service (BaaS) or Database-to-API platforms ). These platforms eliminate the need to manually build custom boilerplate CRUD (Create, Read, Update, Delete) APIs by auto-generating secure REST or GraphQL endpoints directly on top of your data layers.

Major Providers of Database & API Solutions

• • Supabase: An open-source Supabase Firebase alternative built around PostgreSQL. It instantly gives you a managed Postgres database coupled with auto-generated REST and GraphQL APIs, real-time data sync, authentication, and edge functions.rockstardeveloperuniversity.com+1
• • Firebase: Google's flagship mobile and web platform. It offers NoSQL databases (Firestore and Realtime Database) with direct client SDKs that function seamlessly as a real-time database-and-API architecture without traditional server wrangling.encore.dev+1
• • MongoDB Atlas: The managed cloud version of MongoDB which features the MongoDB Atlas Data API . It provides a secure, zero-setup HTTPS REST-like interface to query and modify your JSON document collections directly from applications without managing persistent socket drivers.
• • Appwrite: A secure, open-source, self-hostable Backend-as-a-Service framework that packages databases, user authentication, storage, and cloud functions into an easy-to-use API layer for web and mobile developers.rockstardeveloperuniversity.com+1
• • Convex: A modern, TypeScript-first reactive database and backend platform designed to replace traditional databases and custom API routes with end-to-end type safety and real-time query updates.rockstardeveloperuniversity.com+1
• • Directus: An open-source data platform that wraps any new or existing SQL database (PostgreSQL, MySQL, SQLite, etc.) with an instant, dynamic REST and GraphQL API alongside an intuitive admin dashboard/CMS.nordicapis.com
• • AWS Amplify / AppSync: Amazon's developer-focused umbrella that connects managed data stores like DynamoDB to robust GraphQL and REST APIs via AWS AppSync and Cognito authentication.rockstardeveloperuniversity.com+1
• • HarperDB: A high-performance distributed database that uniquely combines the data storage layer and custom rapid-fire API functions into a single unified engine.

If you have a preference, let me know:

• Are you looking for a relational (SQL) or document (NoSQL) database?
• Do you prefer open-source/self-hosted or a fully managed cloud service?

I can narrow down the best platform for your exact stack.

Yes. If by “database and API solution” you mean a managed backend where developers can store application data and access it programmatically through REST/GraphQL/SDKs, there are several notable companies:

A few distinctions are useful:

• Supabase is particularly close to the classic “database + API” concept: it can automatically generate a REST API from a PostgreSQL schema, with GraphQL and client libraries also available.Supabase+1
• Appwrite is more of a complete backend platform. Its database services expose REST/GraphQL APIs and SDKs, alongside authentication, storage, realtime capabilities, and serverless functions.Appwrite
• Convex takes a different approach: developers write queries and mutations as TypeScript functions, with the database, server functions, and client libraries integrated into one system.Convex Developer Hub+1
• MongoDB Atlas is primarily a managed database platform rather than an auto-generated application-data API. Its APIs are particularly focused on managing Atlas infrastructure; applications normally access database data through MongoDB drivers.MongoDB+1

If you're asking because you're evaluating companies for a product/business idea, I can also give you a broader competitive landscape of 20–30 companies offering “database-as-a-service + API”, including their target customers, pricing model, database technology, funding/size, and how they differentiate.

Many modern platforms—often categorized as Backend-as-a-Service (BaaS) or database platforms with auto-generated data APIs—allow developers to spin up a managed database and instantly access it via REST or GraphQL APIs without writing a traditional backend server.encore.dev+1

Here are the top companies and platforms offering integrated database and instant API solutions for developers:

• Supabase — An open-source Firebase ? alternative built around a managed PostgreSQL database. It automatically generates REST and GraphQL APIs straight from your database schema, alongside built-in authentication, real-time subscriptions, and storage. Check it out on Supabase.encore.dev+1
• Firebase — Owned by Google, Firebase provides NoSQL document databases (Cloud Firestore and Realtime Database) coupled with instant SDKs and REST APIs. It handles client-side synchronization, authentication, and serverless functions natively. Learn more at Firebase.encore.dev
• Convex — A reactive, TypeScript-first backend-as-a-service platform. It replaces traditional databases and custom server code with a built-in document database, fully type-safe queries, and real-time automatic synchronization for web and mobile apps. Explore the platform at Convex.rockstardeveloperuniversity.com+1
• Appwrite — A secure, open-source backend server for web, mobile, and flutter developers. It packages a built-in database with querying capabilities, authentication, and storage into an easy-to-deploy package that provides ready-to-use REST and real-time APIs. Visit Appwrite.rockstardeveloperuniversity.com+1
• AWS Amplify — Amazon's comprehensive toolset and managed backend framework. It connects frontends to robust AWS data services like Amazon DynamoDB and provisions secure GraphQL or REST APIs via AWS AppSync and Amazon API Gateway . Get started via AWS Amplify.rockstardeveloperuniversity.com+1
• PocketBase — An open-source backend written in Go, packaged as a single portable executable file. It features an embedded SQLite database with an auto-generated real-time REST API, admin dashboard, and built-in user management for small-to-medium projects. Check it out at PocketBase.rockstardeveloperuniversity.com+1
• Directus — An open-source data platform that wraps any custom SQL database (PostgreSQL, MySQL, SQLite, etc.) with a real-time REST and GraphQL API layer, accompanied by a ready-to-use no-code data management dashboard. Learn more at Directus.elest.io

Are you looking for a solution tailored to a specific stack (like React/Next.js or mobile), or do you prefer an open-source/self-hosted option versus a fully managed cloud service?

Many platforms offer a managed database bundled with instant auto-generated APIs (commonly referred to as Backend-as-a-Service (BaaS) or Data-API platforms ). These solutions eliminate the boilerplate work of writing custom backend CRUD controllers, handling connection pooling, and setting up basic routing.

The leading options on the market include:

1. Supabase
   • Overview: Often considered the premier open-source Firebase alternative, built on top of a real PostgreSQL database.
   • API Solution: Instantly auto-generates secure RESTful and Realtime/GraphQL-ready APIs straight from your Postgres schema, supported by client libraries and Row Level Security (RLS).
   • Visit: Explore details on the Supabase official website.supabase.com+2
2. Firebase (Google)
   • Overview: Google's flagship mobile and web platform featuring NoSQL document-based data storage options (Cloud Firestore and Realtime Database).
   • API Solution: Provides robust client SDKs and native REST endpoints (.json ) for seamless frontend and mobile data synchronization without writing custom server logic.
   • Visit: Check documentation via Firebase REST API.rockstardeveloperuniversity.com+2
3. Appwrite
   • Overview: A secure, open-source backend server targeted at Web, Mobile, and Flutter developers that runs self-hosted or in the cloud.
   • API Solution: Ships with a rich set of built-in REST and real-time APIs for databases, user authentication, and storage management.
   • Visit: Review architecture on Appwrite.rockstardeveloperuniversity.com
4. Convex
   • Overview: A modern, developer-friendly reactive backend designed explicitly for building realtime web and mobile apps with full TypeScript integration.
   • API Solution: Replaces traditional database drivers and API routes with type-safe functions that query and mutate data reactively out of the box.
   • Visit: Read more on Convex.rockstardeveloperuniversity.com
5. PocketBase
   • Overview: An open-source, lightweight backend written in Go, packed into a single portable executable file.
   • API Solution: Embedded SQLite database with a built-in real-time auto-generated REST-ish API and admin dashboard, perfect for lightweight MVPs and side projects.
   • Visit: Check the project at PocketBase.rockstardeveloperuniversity.com
6. Microsoft Azure (Data API Builder)
   • Overview: An enterprise tool geared toward traditional SQL infrastructure.
   • API Solution: Microsoft’s Data API builder lets developers instantly and securely turn Azure SQL databases, Cosmos DB, and MySQL into modern REST and GraphQL APIs via configuration files.
   • Visit: Learn about capabilities on Microsoft Azure SQL Database.

If you'd like to narrow down which option fits best, let me know:

• Are you building a mobile app or a web app?
• Do you prefer a relational database (SQL) or NoSQL?
• Are you looking for a managed cloud service or something you can self-host?

Yes. There’s a fairly large market of companies offering managed databases plus developer-facing APIs. The main options differ by database model and how much backend functionality they bundle.

Particularly relevant if you mean "database that I can expose as an API"

Supabase is one of the clearest examples: it automatically generates a REST API from your PostgreSQL schema, so developers can work with database tables through HTTP without building the CRUD API themselves.Supabase+1

MongoDB Atlas takes a somewhat different approach: its document database is accessed through MongoDB drivers and its Query API, with additional services such as search, vector search, and data federation.MongoDB

Neon is especially interesting if you're building a developer platform where each customer/user needs their own database. Its platform APIs can provision and manage isolated PostgreSQL databases programmatically, including at large numbers of projects.Neon+1

PlanetScale is another developer-oriented managed database provider, with database branching and APIs for programmatic database management. It now offers both MySQL and PostgreSQL.PlanetScale+1

If you're asking because you're looking for companies in this space to compete with, integrate with, or potentially build a product similar to, I can also give you a much broader list—e.g. 30–50 database/API companies categorized by PostgreSQL, NoSQL, vector databases, serverless databases, embedded databases, and "database-as-an-API" platforms.

Yes. If by “database and API solution” you mean a hosted database that developers can access/manage programmatically through APIs, there are several strong options.

The closest matches

If you're specifically looking for a company where a developer can create a database, then interact with that database through an API, I'd put these at the top:

1. Supabase — probably the most complete example. It runs PostgreSQL and automatically generates REST and GraphQL APIs from the database schema.Supabase+1
2. Neon — particularly interesting if you're building a developer platform. Its API can programmatically create projects, databases, branches, compute endpoints and roles.Neon
3. PlanetScale — offers programmatic database creation and management through its API, including branching and connection management.PlanetScale+1
4. MongoDB Atlas — a strong choice if you want a document database rather than relational PostgreSQL/MySQL.
5. Firebase — particularly good if the API/database is part of a broader mobile/web backend.

There are actually two different business models hidden in your question:

• “Give my developers a database + API to build their application.” → Supabase, Firebase, MongoDB Atlas, Neon, etc.
• “Let developers create and manage databases through my API/platform.” → Neon, Supabase, PlanetScale, and similar infrastructure providers are especially relevant. Supabase, for example, explicitly provides a Management API for programmatically creating and managing projects.Supabase+1

If you're asking because you're looking to build a company/product in this space, I can also give you a competitive landscape of 20+ companies, their APIs, pricing, target customers, and what gap remains in the market.