Best 15 Tools for Building Backend APIs in 2025

Convex is a backend platform that gives you everything needed to build modern web and mobile applications. It includes a real-time database, serverless functions, file storage, and built-in features like authentication and scheduling. Unlike traditional backend setups, Convex updates your app automatically whenever data changes, without requiring complex code.

Appwrite is a backend platform that handles all the technical work behind your apps. Instead of building everything yourself, you get pre-made systems for common needs like storing user data, managing files, and handling authentication. Think of it as a toolbox filled with everything your app needs to work properly.

Supabase is a complete backend platform that gives you all the tools needed to build modern applications. At its core is a Postgres database, which is known for being stable and feature-rich. You can store data, create tables, and manage relationships without writing complex code.

Firebase is a cloud-based platform that provides backend services for applications. Think of it as a complete toolkit that handles everything your app needs on the server side. Instead of building your own servers, databases, and authentication systems from scratch, Firebase gives you ready-to-use services.

Nhost is a complete backend service that provides everything needed to build modern applications. You get a PostgreSQL database, a real-time GraphQL API, user authentication with multiple sign-in options, file storage for images and documents, and the ability to run custom code.

AWS Amplify is a set of tools and services that helps developers create full-stack applications. It includes everything needed to build an app: a place to host your website, databases to store information, user login systems, file storage, and ways to connect different parts of your app together.

PocketBase is a backend solution that puts all essential backend features into one small file. Unlike traditional backends that need multiple services and databases, PocketBase includes an embedded SQLite database with real-time updates, built-in user authentication, file storage system, and a web-based admin panel.

Back4App is a Backend-as-a-Service platform that provides all the backend tools needed for mobile and web applications. You get a database, user authentication system, file storage, APIs, and server-side functions without setting up your own servers.

Parse Platform is an open-source Backend-as-a-Service framework that runs on Node.js. It provides a complete backend solution without needing to write everything from scratch. You can store data, handle user accounts, send push notifications, and manage files all through one system.

Xano is a complete backend-as-a-service platform that handles all the technical work behind your applications. You get a PostgreSQL database, API builder, authentication system, and hosting infrastructure without managing servers or writing backend code.