Open Source Backend-as-a-Service (BaaS) Tools
A curated collection of the best open source cloud-based platforms providing backend services like databases, authentication, and storage..
Postgres-powered backend platform for production apps
Stars
Stars growing over the last 30 days114,649Last commit
16 hours agoLicense
Apache-2.0
Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.
Open Source Alternative to:
Open-source backend platform for rapid app development
Stars
57,890Last commit
11 hours agoLicense
BSD-3-Clause
Open-source development platform with built-in backend infrastructure, web hosting, and security features. Scale applications using your preferred programming languages.
Open Source Alternative to:
Open-source data platform for effortless content management
Stars
38,688Last commit
22 hours agoLicense
Unknown
A versatile headless CMS and API engine that simplifies data management, content creation, and application development.
Open Source Alternative to:
Open-source backend in a single file
Stars
61,603Last commit
13 days agoLicense
MIT
A lightweight, self-hosted backend solution with real-time database, authentication, and file storage capabilities.
Open Source Alternative to:
Build full-stack apps with TypeScript and real-time sync
Stars
12,774Last commit
1 day agoLicense
Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.
Open Source Alternative to:
Accelerate backend development with effortless scalability
Stars
12,699Last commit
2 days agoLicense
MPL-2.0
A powerful platform for building cloud backends, automating infrastructure, and simplifying development workflows for faster, more efficient coding.
Open Source Alternative to:
Realtime client-side database for collaborative apps
Stars
10,560Last commit
3 days agoLicense
Apache-2.0
Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Open Source Alternative to:
Serverless backend platform for modern app development
Stars
9,375Last commit
12 hours agoLicense
MIT
Fully managed backend infrastructure with built-in authentication, database, storage, and serverless functions for rapid application development.
Open Source Alternative to:
Build powerful backends without leaving your browser
Stars
6,846Last commit
2 years agoLicense
Apache-2.0
A low-code platform for creating robust backends, complete with a spreadsheet UI for easy data management and custom functions.
Open Source Alternative to:
Feature-rich backend that runs anywhere you need it
Stars
3,780Last commit
8 days agoLicense
Apache-2.0
Lightweight Firebase alternative with database, auth, storage, and workflows. Framework-agnostic backend that integrates with NextJS, Remix, Hono and more.
Open Source Alternative to:
Local-first, offline-first no-code database platform
Stars
2,974Last commit
2 months agoLicense
AGPL-3.0
Build and manage custom databases with ease, create type-safe APIs, and develop applications quickly
Open Source Alternative to:
Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
Sent