Open-source Huawei AppGallery Connect alternatives

Supabase is a backend platform built around a dedicated Postgres database. It packages the pieces most web, mobile and AI apps need, including authentication and authorization, auto-generated APIs, file storage, serverless functions and a dashboard, so developers can start without assembling separate services. Its stated aim is a developer experience similar to Firebase, built from open-source components.

APIs are generated from your schema as REST and GraphQL, with realtime subscriptions over websockets. Logic can live in database functions or in Edge Functions that run on Deno. For AI work there is a toolkit for vectors and embeddings built on pgvector, and Postgres extensions such as PostGIS are available. Supabase combines existing open tools with ones it builds itself when nothing suitable exists.

The code is Apache-2.0 licensed. Supabase is offered as a hosted platform you can sign up for without installing anything, and the same stack can be self-hosted or run locally for development. It suits teams that want Postgres at the core of their app but prefer not to build the surrounding backend themselves.

PocketBase is an open-source backend written in Go that ships as one file. It bundles an embedded SQLite database with realtime subscriptions, built-in management of users and files, a convenient admin dashboard and a simple REST-style API, which makes it quick to stand up a backend for a small web or mobile project.

You can use it as a standalone application by downloading the prebuilt executable for your platform and running its serve command, or you can extend it as a Go library to add custom routes and logic. The prebuilt binaries come with a JavaScript VM plugin enabled for scripting. Official SDK clients exist for JavaScript, covering browsers, Node.js and React Native, and for Dart, covering web, mobile, desktop and CLI.

PocketBase is MIT licensed. The maintainers warn that it is still under active development and that backward compatibility is not guaranteed before version 1.0.0, so upgrades deserve some care. It suits solo developers and small teams who want a simple, self-contained backend without managing a database server separately.

Appwrite is an open-source platform for building and scaling web, mobile and AI apps. It bundles the backend services most apps need, namely auth, databases, storage, functions, messaging, realtime and hosting, and presents them as an agent-friendly cloud with MCP support. It can run as a managed cloud platform or be self-hosted on infrastructure you control.

Auth supports email, SMS, OAuth, anonymous sessions and magic URLs. Databases can be modeled and queried through Appwrite itself or backed by managed PostgreSQL and MySQL. Storage keeps files with compression, encryption, image transformations and permission controls, and Functions run serverless code in isolated runtimes triggered by events. Sites deploys static, SSR and CSR frontends from Git with previews, and Messaging sends email, SMS and push notifications.

Developers integrate through client and server SDKs, including Flutter, Swift, React Native and JavaScript, or let coding agents such as Cursor, Claude Code and Codex operate a live project through a hosted MCP server. Appwrite is BSD-3-Clause licensed and written mainly in PHP, with Docker-based self-hosting for Unix and Windows.

Parse Server is an open-source backend that runs anywhere Node.js can run. It works with the Express web framework, so you can mount it inside an existing web application or run it by itself, and it is the maintained successor to the original hosted Parse platform. Topics identify it as a mobile backend as a service with REST and GraphQL APIs.

The documentation covers the full lifecycle: running Parse Server locally or in a Docker container, saving and querying objects, connecting an SDK, configuring options and access scopes, and deploying elsewhere. It works with MongoDB and PostgreSQL as databases and offers Cloud Code for custom server logic, file storage, and a health endpoint for monitoring. A guide, API reference and Cloud Code guide help with getting started, and long-term-support branches exist alongside the current release.

Parse Server is written in JavaScript and licensed under Apache-2.0, with development supported by sponsors and backers on Open Collective. It suits teams that want a Firebase-style backend they host themselves, particularly mobile developers who already use the Parse SDKs.

Nhost is an open-source backend platform positioned as a Firebase alternative with GraphQL. It is built around open source, GraphQL, SQL and a good developer experience, and gives frontend developers a complete backend without writing server code.

The stack combines a PostgreSQL database, an instant GraphQL API through Hasura, an authentication service, a storage service and serverless functions written in Node.js, in JavaScript or TypeScript. The Nhost CLI creates a local development environment that follows database migrations and Hasura metadata, and a client package called nhost-js is used from the app. Nhost is frontend agnostic, with topics listing Next.js, React, Vue and Flutter.

You can use the Nhost hosted platform, develop locally with the CLI or self-host the entire stack, with an example docker-compose file provided. The project is written in TypeScript and licensed under MIT. It suits developers who prefer SQL and GraphQL to a proprietary NoSQL backend.