Best Open Source Backend Service Projects

Supabase Logo

Supabase

The open source Firebase alternative.

★ 111,630 Updated: Oct 2026 Status: Active
Appwrite Logo

Appwrite

Open-source backend server

★ 57,695 Updated: Oct 2026 Status: Active
Temporal Logo

Temporal

The durable execution system for resilient applications.

★ 23,735 Updated: Oct 2026 Status: Active
Supabase Realtime Logo

Supabase Realtime

Broadcast, presence and Postgres changes over WebSockets

★ 7,656 Updated: Oct 2026 Status: Active
Kuzzle Logo

Kuzzle

Accelerate IoT development with ready-made backend

★ 1,668 Updated: Oct 2026 Status: Active
GoCommerce Logo

GoCommerce

Headless e-commerce API for JAMstack and static sites

★ 1,616 Updated: Jul 2025 Status: Slowing
Reticulum Logo

Reticulum

Phoenix server that powers Hubs

★ 460 Updated: Aug 2026 Status: Active
thenewboston Website API Logo

thenewboston Website API

REST API behind the thenewboston.com website

★ 63 Updated: Jan 2022 Status: Inactive