Realtime (32)

AWS AppSync- AWS AppSync is a managed GraphQL service with built-in realtime subscriptions, offline data sync, and integration with AWS services for building collaborative, data-driven applications at scale.
Ably- Ably is a realtime experience platform providing APIs and SDKs to power realtime functionality for chat, messaging, notifications, and collaboration without needing to build or maintain realtime infrastructure.
Appwrite- Appwrite is an open-source backend-as-a-service platform with realtime subscriptions, databases, authentication, file storage, and cloud functions that can be self-hosted or used on cloud.
Back4App- Back4App is a backend-as-a-service platform built on Parse Server offering MongoDB database, LiveQuery for realtime subscriptions, authentication, and cloud functions for rapid app development.
Batch- A mobile engagement platform offering real-time push notifications for iOS and Android.
Centrifugo- Centrifugo is an open-source realtime messaging server that instantly delivers messages to application users connected over WebSocket, HTTP-streaming, SSE, WebTransport, or GRPC. It handles persistent connections and efficient broadcasting for chat, multiplayer games, live comments, and collaborative tools.Language-agnostic
Cloud Firestore- Cloud Firestore is Google's next-generation NoSQL database with built-in realtime synchronization, offline support, and seamless Firebase integration for mobile, web, and server applications.
Cloudflare Durable Objects- Cloudflare Durable Objects is a serverless coordination layer providing persistent, low-latency state management at the edge with WebSocket support for building realtime applications globally.
Convex- Convex is a fullstack TypeScript development platform combining a reactive database with automatic dependency tracking, making realtime sync the default without needing websockets or state management.
Diffusion- A low-latency PubSub cache server for real-time data delivery and management across cloud and on-premise deployments.
Ditto- Ditto is an edge-native mobile database with built-in peer-to-peer connectivity and resiliency. It enables real-time sync across devices using BLE, WiFi, LAN, and cloud transports, with automatic conflict resolution via CRDTs—ideal for offline-first and mesh networking scenarios.Mobile-first (iOS, Android, Flutter)
Electric SQL- Electric SQL is a Postgres-native sync engine that enables realtime synchronization of data from your database into local client applications. It uses logical replication to detect changes and push updates in realtime, enabling offline-first, collaborative apps with instant UI.Postgres-native
Firebase Realtime Database- Firebase Realtime Database is Google's cloud-hosted NoSQL database that syncs data in realtime to connected clients, with built-in authentication and offline support for mobile and web apps.
HiveMQ- HiveMQ is an Industrial AI Platform built on the MQTT standard that connects and governs industrial data in real time.
InstantDB- InstantDB is a batteries-included client-side database for building real-time and collaborative applications. It provides relational queries, transactions, authentication, permissions, storage, and offline support—all in a simple SDK that works directly in the browser.JavaScript/React-first
Laravel Reverb- A self-hosted WebSocket server for Laravel applications that enables real-time communication with full infrastructure control.
Liveblocks- Liveblocks is a collaboration infrastructure platform providing realtime multiplayer APIs with pre-built components for comments, presence, notifications, and AI agents integrated via WebSocket infrastructure.
Nhost- Nhost is a fully managed backend platform providing an enterprise-grade Postgres database, auto-generated realtime GraphQL APIs, authentication, file storage, and serverless functions—designed as an open-source Firebase alternative.Postgres/Hasura/GraphQL ecosystem
PartyKit- PartyKit is a deployment platform for building globally distributed, stateful, realtime multiplayer and collaborative applications. Built on Cloudflare Durable Objects, it enables serverless coordination for chat, collaborative editing, multiplayer games, and realtime experiences with minimal latency.Cloudflare Workers
PocketBase- PocketBase is an open-source backend in a single executable file, providing a SQLite database with realtime subscriptions via Server-Sent Events, built-in authentication, file storage, and an admin dashboard UI.Language-agnostic
PowerSync- PowerSync is a sync engine that keeps backend databases in sync with on-device embedded SQLite. It enables offline-first, real-time reactive apps through bi-directional partial syncing from Postgres, MongoDB, MySQL, or SQL Server with automatic background sync.Multi-database
PubNub- PubNub is a realtime communication platform providing cloud infrastructure and APIs for pub/sub messaging, chat, presence detection, and low-latency data streaming across connected devices and applications.
Pusher- Pusher is a hosted realtime APIs platform offering Channels for pub/sub messaging and Beams for push notifications, enabling developers to add scalable realtime features to web and mobile applications.
RethinkDB- RethinkDB is an open-source, scalable NoSQL database designed from the ground up for real-time applications. It inverts traditional polling by allowing developers to continuously push updated query results to applications in real-time via changefeeds.Language-agnostic with SDKs for Python, Node.js, Ruby, and more
Rivet- Rivet is an actor-based realtime platform for building stateful, multiplayer applications. It provides WebSocket connections, persistent state management, and globally distributed deployment for realtime chat, multiplayer games, and collaborative tools.Language-agnostic with JavaScript/TypeScript focus
Socket.IO- Socket.IO is an open-source JavaScript library providing bidirectional, event-based communication between clients and servers over WebSockets with fallback protocols and automatic reconnection.
Supabase- Supabase is an open-source Firebase alternative providing a PostgreSQL database with built-in realtime subscriptions, authentication, and edge functions for building scalable web and mobile applications.free tier
Svix- Webhook delivery infrastructure with automatic retries, signature verification, and a management dashboard. Lets you add reliable webhooks to your product without building delivery infrastructure.free tierSOC2
TrailBase- TrailBase is a blazingly fast, open-source Firebase alternative built as a single-executable backend on Rust and SQLite. It provides type-safe REST and realtime APIs, WebAssembly runtime for custom endpoints, built-in authentication, and admin UI with sub-millisecond latencies.Rust/SQLite/WebAssembly
Twilio Sync- Twilio Sync is a state synchronization service enabling real-time two-way communication between browsers, mobile apps, and cloud services for building collaborative and interactive applications.
Velt- Velt is a collaboration infrastructure platform combining WebSocket messaging with 25+ pre-built UI components for comments, multiplayer features, and real-time interactions ready for production use.
Zero- Zero is a query-driven sync engine that enables instant web applications by syncing a subset of data to the client before it's needed. Reads and writes happen against a normalized local datastore and are synced with the server continuously in the background.Language-agnostic