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Firebase

firebase/firebase-js-sdk

Popular

Google's app development platform with Firestore, auth, hosting, functions and analytics.

Supabase

supabase/supabase

TrendingPopular

Open-source Firebase alternative built on Postgres with auth, storage, realtime, edge functions and vectors.

Appwrite

appwrite/appwrite

Open-source backend server with databases, auth, storage, functions, messaging and sites hosting.

Convex

convex/convex-backend

Trending

Reactive TypeScript backend where queries are functions and results stay live-synced to clients.

AWS Amplify

aws-amplify/amplify-js

AWS toolkit and hosting for full-stack web and mobile apps backed by AppSync, Cognito and DynamoDB.

PocketBase

pocketbase.io

Popular

Open-source backend in one Go binary: embedded SQLite, realtime, auth, files and an admin UI.

OneSignal

onesignal.com

Popular

Multi-channel messaging service for mobile push, in-app messages, email and SMS.

RevenueCat

revenuecat.com

Popular

In-app purchase and subscription backend over StoreKit and Google Play Billing, with paywalls and analytics.