BaaS Open Source Tools

Alternative toFirebase

Run a self-hosted BaaS from one executable binary.

• 61,507 GitHub stars
• MITLicence MIT
• #BaaS

Alternative toFirebase

Self-hosted backend: auth, databases, storage, and functions

• 57,737 GitHub stars
• BSD-3-ClauseLicence BSD-3-Clause

Alternative toCourier

Open source notification infrastructure for product teams

• 40,175 GitHub stars
• MITLicence MIT

Alternative toContentful

Wrap any SQL database with REST and GraphQL APIs and an admin UI

• 38,631 GitHub stars

Alternative tocommercetools

Open source headless e-commerce platform with GraphQL API

• 23,459 GitHub stars
• BSD-3-ClauseLicence BSD-3-Clause

Alternative toDocuSign

Open source document signing and fillable PDF forms

• 18,756 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toXano

Generate production-ready backends for platform engineers

• 16,015 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toAuth0

Open source identity platform with SSO, RBAC, and multi-tenancy

• 15,354 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toAuth0

Multi-tenant auth platform with SSO, RBAC, and social login

• 14,731 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toSupabase

Backend-as-a-service platform built for AI coding agents

• 13,152 GitHub stars
• Apache-2.0Licence Apache-2.0
• #BaaS