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Top 19 Realtime tools for developer in 2023.

See details of features and pricing of Realtime developer tools. We're comparing best apps, libraries or tools for Realtime such as Socket.IO, Pusher Channel, PubNub, Firebase, Back4app, soketi, Pocketbase, Replicache, SurrealDB, Realm, Ably Realtime, Matrix, Liveblocks, Knock, Emitter, StaticBackend, Tinybird, RisingWave, RisingWave Cloud to help you find your next Realtime tool. .

If you know the best tool for Realtime that not listed here,
please consider to submit it here.

๐Ÿค™๐Ÿฝ Skip to product:

  1. Socket.IO
  2. Pusher Channel
  3. PubNub
  4. Firebase
  5. Back4app
  6. soketi
  7. Pocketbase
  8. Replicache
  9. SurrealDB
  10. Realm
  11. Ably Realtime
  12. Matrix
  13. Liveblocks
  14. Knock
  15. Emitter
  16. StaticBackend
  17. Tinybird
  18. RisingWave
  19. RisingWave Cloud

1. Socket.IO

logo Socket.IO


Bidirectional and low-latency communication for every platform

๐Ÿ›  Socket.IO's Features

What can developer do with Socket.IO


the technology is open source. But self hosted.


In most cases, the connection will be established with WebSocket, providing a low-overhead communication channel between the server and the client.


Rest assured! In case the WebSocket connection is not possible, it will fall back to HTTP long-polling. And if the connection is lost, the client will automatically try to reconnect.


Scale to multiple servers and send events to all connected clients with ease.

๐Ÿ’ฐ Socket.IO's Pricing

How much does Socket.IO cost?

Free Self Hosted and Open Source

2. Pusher Channel

logo Pusher Channel

Pusher Channel

Easily build scalable realtime graphs, geotracking, multiplayer games, chat and more for your web and mobile apps with our hosted pub/sub messaging API.

๐Ÿ›  Pusher Channel's Features

What can developer do with Pusher Channel

Managed WebSocket connections

Whether you have one connection or millions, ultra-low latency with automatic fallbacks means Channels works anywhere

Flexible and intuitive Pub/Sub messaging

We deliver billions of messages every month across browsers, mobile and IoT with our event-based API

Presence channels

Simple-to-use presence channels for user lists, collaboration, and more

Queryable API

Easily query application state, channel information, presence users and much more


Capture and respond to client events as they happen and use data to take user interaction to the next level

End-to-end encryption

You can trust our encryption and authenticity features to help you stay secure. Pusher is GDPR and HIPAA compliant

๐Ÿ’ฐ Pusher Channel's Pricing

How much does Pusher Channel cost?

3. PubNub

logo PubNub


Leverage the power of hosted real-time APIs to build engaging remote experiences using in-app chat, push notifications, location tracking and more.

๐Ÿ›  PubNub's Features

What can developer do with PubNub

3rd-party Integrations

Language translation, content moderation, push notifications, and other best-in-class 3rd party services.

Business Logic

Filter (profanity, keywords, etc), parse, and route based on message content or user status.

AI and aggregation

Chatbots, natural language processing, sentiment analysis, and other AI-enabled services.

๐Ÿ’ฐ PubNub's Pricing

How much does PubNub cost?


  • Develop a proof of concept with some functionality limits
  • Test your code with up to 200 MAUs

Starter start at $49/mo

  • Launch a pilot or small-scale app
  • Build and test with full account controls
  • Start with pay-as-you-go MAU pricing, upgrade as you scale


  • Custom pricing plans for your use case, only pay for what you use
  • Easily launch your app and effortlessly scale as your usage grows
  • Add and change features and functionality at any time
  • Dedicated technical experts for guidance and review as you build
  • Higher levels of support for guaranteed response times and dashboarding to ensure visibility and operational alignment

4. Firebase

logo Firebase


Firebase is Googleโ€™s mobile platform that helps you quickly develop high-quality apps and grow your business.

๐Ÿ›  Firebase's Features

What can developer do with Firebase

  • Cloud Firestore
  • Extensions
  • App Check
  • Cloud Functions
  • Authentication
  • Hosting
  • Cloud Storage
  • Realtime Database
  • Crashlytics
  • Performance Monitoring
  • Test Lab
  • App Distribution
  • Google Analytics
  • Machine Learning
  • In-App Messaging
  • A/B Testing
  • Cloud Messaging
  • Remote Config
  • Dynamic Links

๐Ÿ’ฐ Firebase's Pricing

How much does Firebase cost?

Firebase has generous free tier with "pay as you go" plan Firebase Detail pricing here

5. Back4app

logo Back4app


Create your backend in minutes, so you focus on providing an exceptional customer experience.

๐Ÿ›  Back4app's Features

What can developer do with Back4app

  • Real-Time Database
  • Cloud Functions
  • GraphQL, Rest & SDK
  • Authentication
  • File Storage
  • Blockchain Storage
  • Notifications

๐Ÿ’ฐ Back4app's Pricing

How much does Back4app cost?

Free plan

Ideal for developing, learning and prototyping. Explore our features and start building with free monthly capacity of 25k requests, 250MB data storage, 1GB transfer, 1GB file storage. Supported by community.

MVP $15

  • Per app per month, billed annually Save 40%
  • 500k Requests
  • 2GB Data Storage
  • 250 GB Data Transfer
  • 50 BG File Storage

Pay as you go ($80)

  • Per app per month, billed annually Save 20%
  • 5M Requests
  • 4 GB Data Storage
  • 1 TB Data Transfer
  • 250 GB File Storage

Dedicated ($400)

  • Per month, billed annually Save 20%
  • Server Capacity
  • 8 CPUs / 16 GB
  • Unlimited Requests
  • 80 GB Data Storage
  • 2 TB Data Transfer
  • 1 TB File Storage

6. soketi

logo soketi


Soketi is your simple, fast, and resilient open-source WebSockets server. ๐Ÿ“ฃ

๐Ÿ›  soketi's Features

What can developer do with soketi

Cheaper than any competitor.

This is because you pay only for your infrastructure. Whether it's your basement server or cloud, it fits and runs. It can be as cheap as $5 on DigitalOcean

โšก Blazing fast.

Guaranteed core message delivery in less than 100ms. Written on top of C, ported to Node.js. Built with one of the fastest available technologies.

๐Ÿ“ก Pusher compatible.

You don't need to replace your existing code. It's using the Pusher Protocol v7. This means you just connect to the server.

๐Ÿคฟ Ready for production

You can scale to hundreds of servers with Redis or NATS and you won't lose performance. It is resilient enough so you can have a good night sleep.

๐Ÿ” Built-in app management

Just like Pusher, you can define your own app credentials. You don't even need Pusher for it, and you can read from any database.

๐Ÿ”— HTTP Webhooks

Trigger HTTP requests whenever a channel gets occupied. Pair it with Lambda functions and soketi will invoke them for you.

๐Ÿ’ฐ soketi's Pricing

How much does soketi cost?

It's free/Open source (self-hosted)

  • With Digitaocean App start from $5
  • With Serverless (cloudflare) start from $12

7. Pocketbase

logo Pocketbase


Open Source backend in 1 file with realtime database, authentication, file storage and admin dashboard

๐Ÿ›  Pocketbase's Features

What can developer do with Pocketbase

  • embedded database (SQLite) with realtime subscriptions
  • built-in files and users management
  • convenient Admin dashboard UI
  • and simple REST-ish API

๐Ÿ’ฐ Pocketbase's Pricing

How much does Pocketbase cost?

Open source, sefl-hosted

8. Replicache

logo Replicache


Replicache is a JavaScript library for building high-performance, collaborative, offline-capable web apps.

๐Ÿ›  Replicache's Features

What can developer do with Replicache

Realtime Collaboration

Users see each othersโ€™ changes live, as they happen. No refreshes, no locking.

Instant UI

The UI responds instantly, with no server roundtrips. All reads and writes are โ€œoptimisticโ€ by default.

Robust Offline Support

Applications can go offline for hours or days and sync up smoothly when they come back online.

Bring Your Own Backend

Your data stays on your servers. Replicache is client-side technology and works with many backend stacks.

Transactional conflict resolution

Replicache uses server-authoritative rollback netcode to resolve conflicts. It's an intuitive and powerful technique used for decades in the game industry.

It Just Works

Conflicts, tabs, schema migrations โ€“ Replicache handles all the hard parts. You'll find it's even more productive than traditional web frameworks.

๐Ÿ’ฐ Replicache's Pricing

How much does Replicache cost?

Replicache is free to use for non-commercial projects, and for companies with < $200k annual revenue and < $500k in funding.

For other commercial projects, the first two months are free, and then we charge based on the number of monthly active profiles.

Check detail Replicache pricing here

9. SurrealDB

logo SurrealDB


SurrealDB is the ultimate database for tomorrowโ€™s serverless, jamstack, single-page, and traditional applications.

๐Ÿ›  SurrealDB's Features

What can developer do with SurrealDB

  • Document & graph database
  • JOIN-less deep fetching
  • Distributed ACID transactions
  • Built with Rust
  • Structured and un-structured data
  • SQL-style querying
  • GraphQL and REST API
  • Support for multi-tenant apps
  • Multi-row, multi-table transactions
  • Online and offline data sync
  • In-built access and permissions
  • Multi-column and full-text indexes
  • Incrementally computed views
  • Distributed and highly-scalable
  • No complex back-end servers and APIs

๐Ÿ’ฐ SurrealDB's Pricing

How much does SurrealDB cost?

Free, Self hosted. Cloud version will be available

10. Realm

๐Ÿ›  Realm's Features

What can developer do with Realm

Fast and lightweight

Build data rich apps without draining device resources with Realm's lazy loading and zero-copy architecture.

Simple to start and scale

The object-oriented data model lets developers work directly with native objects โ€“ no ORMs or DAOs needed.

Built-in mobile to cloud sync

Real-time mobile to cloud data sync makes it easy to build interactive features that keep data up-to-date across multiple devices, users, and the backend.

11. Ably Realtime

logo Ably Realtime

Ably Realtime

Ably provides a suite of APIs to build, extend, and deliver powerful digital experiences in realtime.

๐Ÿ›  Ably Realtime's Features

What can developer do with Ably Realtime

Build with a suite of simple APIs to develop powerful realtime experiences. Start with pub/sub messaging that is guaranteed to deliver and automatically translates between protocols.

Extend by transparently and securely connecting your cloud services with our managed integrations.

Deliver at scale with our highly-elastic, fault-tolerant global edge network engineered to deliver predictable performance at scale - and with 99.999% uptime SLAs.

๐Ÿ’ฐ Ably Realtime's Pricing

How much does Ably Realtime cost?


  • To support our developer community.
  • 6m monthly messages
  • 200 peak connections
  • 200 peak channels


  • Pay for what you use, dynamically scale.
  • Pay Monthly $2.50 per million messages
  • $15.00 per thousand peak connections
  • $15.00 per thousand peak channels


ENTERPRISE Build your own package with enterprise-only features, integrations, SLAs, compliance, and custom technical support.

  • 24/7 support, 365 days a year.
  • Enterprise-only features.
  • Flexible hard limits.
  • Access to engineers during on-boarding.

12. Matrix

logo Matrix


Matrix is an open standard for interoperable, decentralised, real-time communication

๐Ÿ›  Matrix's Features

What can developer do with Matrix

Imagine a world... ...where it is as simple to message or call anyone as it is to send them an email. ...where you can communicate without being forced to install the same app. ...where you can choose who hosts your communication. ...where your conversations are secured by E2E encryption. ...where thereโ€™s a simple standard HTTP API for sharing real-time data on the web.

13. Liveblocks

logo Liveblocks


Liveblocks is a set of APIs and tools that helps you create performant and reliable multiplayer experiences in minutes.

๐Ÿ›  Liveblocks's Features

What can developer do with Liveblocks


Add presence to your product, making people feel like theyโ€™re together in the same room.

storageblock (Beta)

Synchronize your application state between users, enabling them to edit the same data in realโ€‘time.


Get insight into how your users are collaborating to help you make informed product decisions.

๐Ÿ’ฐ Liveblocks's Pricing

How much does Liveblocks cost?


Free no credit card required

  • Unlimited rooms
  • 5,000 connections per month
  • Community support presenceblock:
  • Unlimited presence updates storageblock:
  • Included for free while in beta analyticsblock:
  • 1 hour history


$20 per month + usage cost

  • Unlimited rooms
  • 10,000 connections per month
  • Email support presenceblock:
  • Unlimited presence updates storageblock:
  • Included for free while in beta analyticsblock:
  • 1 month history


Contact us for volume discounts

  • Unlimited rooms
  • 100,000+ connections per month
  • Priority support presenceblock:
  • Unlimited presence updates storageblock:
  • Included for free while in beta analyticsblock:
  • 1 year history

14. Knock

logo Knock


Knock is flexible, reliable notifications infrastructure thatโ€™s built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.

๐Ÿ›  Knock's Features

What can developer do with Knock

Ship product notifications in hours, not months

Move fast with a notification engine thatโ€™s ready to scale from your first welcome email to a cross-channel system that puts your customer first. With Knock, you get a team thatโ€™s dedicated to one thing and one thing only: your notifications.

Designed for flexibility

Knock handles even the most complex notifications use-cases, built on top of a series of primitives that make it easy to compose and create notification logic to power your product. Send fewer, higher relevancy notifications that respect the time and attention of your users.

A real-time notification inbox, out-of-the-box

Drop in our pre-built, real-time enabled components to complete your notification experience in your app, backed by Knockโ€™s powerful notifications infrastructure.

๐Ÿ’ฐ Knock's Pricing

How much does Knock cost?


$0 / mo Up to 10,000 notifications per month Unlimited channels to get started 30-day log retention Features:

  • Unlimited team members
  • Unlimited notification workflows
  • Batch and delay notifications
  • SSO via Google


$250 / mo Includes 50,000 notifications per month $5 per 1,000 additional notifications Up to 3 channels 30-day log retention Everything in Developer plus...

  • Remove Knock branding


$800 / mo Includes 50,000 notifications per month $5 per 1,000 additional notifications Unlimited channels 90-day log retention Everything in Starter plus...

  • Per-customer branding
  • Per-customer preferences
  • SAML 2.0 SSO


$2500 / mo Volume-based discounts so you can grow with Knock for the long-term Unlimited channels Unlimited log retention Everything in Growth plus...

  • Volume-based pricing
  • Enterprise SLAs
  • Shared Slack channel and priority support
  • SCIM user provisioning

15. Emitter

logo Emitter


Emitter is a real-time communication service for connecting online devices. The Publish-Subscribe messaging API is built for speed and security.

๐Ÿ›  Emitter's Features

What can developer do with Emitter


Emitter provides a messaging pattern where senders of messages, called publishers, send messages to Publish-Subscribe channels. Receivers, called subscribers, each receive a copy of the message in real-time. This decouples sending and receiving, giving you all the advantages of asynchronous communication.


We have designed a system that can be distributed across the globe. The system is designed to handle millions of messages per second and to scale horizontally without any problems.


We have built the system with a dead-simple and easy to use API. The API is designed to publish, subscribe and unsubscribe from channels, and all other functionality is built using that same API.


The entire system is designed to ensure speed-of-light message delivery. Whether you are building a web application, a dashboard, an online game or a connected car application, we ensure the fastest possible communication.


The system supports a distributed message filtering where a subscriber wishes to receive only a subset of messages, lowering the bandwidth requirement and overall design complexity of applications.


Published messages can be stored for a period of time on our servers and sent to subscribers on-demand. This ensures that your applications will never miss a message, even if they were not connected when the message was sent.

๐Ÿ’ฐ Emitter's Pricing

How much does Emitter cost?

Open source

16. StaticBackend

logo StaticBackend


StaticBackend is an open source self-hosted backend server API.

๐Ÿ›  StaticBackend's Features

What can developer do with StaticBackend


Choose between PostgreSQL or MongoDB. Nothing to install for local development. Use the in-memory database engine.

Users management

Create accounts and users. Let your user log in and reset their password. It's all built-in.


Let users join channels to exchange data. React to database updates in less than 10 lines of code.

Cloud storage

Uploading and serving files are needed frequently for most applications. StaticBackend bundle with multiple options.

Schedule tasks

Use schedule tasks to send onboarding emails, trial expiration cleanup, Slack notifications. Calls built-in function or URL from schedule or system event.

Like having a backend team

The mission is to handle all common backend functionalities. If something is missing, ask or, better yet, contribute.

๐Ÿ’ฐ StaticBackend's Pricing

How much does StaticBackend cost?

Open source

17. Tinybird

logo Tinybird


Tinybird helps data teams build real-time Data Products at scale through SQL-based API endpoints.

๐Ÿ›  Tinybird's Features

What can developer do with Tinybird

Seamless data ingestion

Use our Data Connectors or just use .csv files. Tinybird guesses the best schema for your data and ingests millions of rows per second.

Fast by default

Start simple and optimize later. Tinybird is orders of magnitude faster than relational databases and traditional data warehouses.

SQL based

Just use SQL to power your transformations and APIs in a notebook-like environment.


Forget about data pipelines. Just work with raw data. You can transform with SQL on-the-fly, at ingestion or query time.

Dynamic and self-documenting APIs

From data to APIs in minutes. Implement business logic using dynamic parameters. Share automatically generated API documentation pages with the whole team.

Secure and rapid application development

Use tokens to control access to API endpoints. Implement as many access policies as you need. Support for row-level security.

๐Ÿ’ฐ Tinybird's Pricing

How much does Tinybird cost?

Screenshot 2023-06-24 at 11.00.31.png

18. RisingWave

logo RisingWave


The distributed streaming database: SQL stream processing with Postgres-like experience ๐Ÿช„. 10X faster and more cost-efficient than Apache Flink ๐Ÿš€.

๐Ÿ›  RisingWave's Features

What can developer do with RisingWave

RisingWave is a distributed SQL database for stream processing. It is designed to reduce the complexity and cost of building real-time applications. RisingWave consumes streaming data, performs incremental computations when new data comes in, and updates results dynamically. As a database system, RisingWave maintains results in its own storage so that users can access data efficiently.

RisingWave accepts data from sources like Apache Kafka, Apache Pulsar, Amazon Kinesis, Redpanda, and materialized CDC sources.

Data in RisingWave can be output to external targets such as message brokers, data warehouses, and data lakes for storage or additional processing.

What is RisingWave?

๐Ÿ’ฐ RisingWave's Pricing

How much does RisingWave cost?


19. RisingWave Cloud

logo RisingWave Cloud

RisingWave Cloud

RisingWave Cloud provides the power to create a new cloud-hosted RisingWave cluster and get started on stream processing in minutes.(RisingWave is a distributed SQL database for stream processing.)

๐Ÿ›  RisingWave Cloud's Features

What can developer do with RisingWave Cloud

RisingWave Cloud simplifies and streamlines data processing for modern data workflows. It is a fully-managed and scalable stream processing platform powered by the open-source project RisingWave.

The intuitive console of RisingWave Cloud allows you to manage data sources easily, analyze streaming data, and visualize and deliver results. Its informative dashboard lets you easily deploy, monitor, and scale your streaming services. The serverless architecture eliminates the need for manual server management, freeing up your resources so that you can focus on the data.

Whether you are an experienced data professional or just starting, RisingWave Cloud is the ideal solution for modern data processing. Start now and bring the power of streaming analytics to your applications and services at a minimal cost.

  • Monitor the system and manage clusters and users.
  • Start running queries through the web console with the built-in client.
  • Provide an easy on-ramp for new users.

What&#039;s RisingWave Cloud? Get Started on Stream Processing in Minutes Real-time insights on streaming data using SQL

๐Ÿ‘‹๐Ÿฝ About Realtime

Realtime programming is a type of programming where the programmer writes code that is designed to run as soon as it is invoked, without any delay. This is in contrast to most programming, where code is written to run at some later time, either when invoked by another piece of code, or when a certain event occurs.

Why is realtime feature important for developer?

Realtime programming is important for developers because it allows them to create applications that need to respond to events immediately, without any delay. This can be important for applications that need to interact with the user in real time, or that need to control hardware devices that can only be accessed in real time.

๐Ÿ‘‹๐Ÿฝ What is this page?

"What is the best Realtime tool for developer? " Hope this page answering your question. This is a comparison page of recommended Realtime coding tools, for developer by developer. Find your next top Realtime alternative programming tools here. We list features and pricing with hope this resources can help you decide which Realtime tools you need and best for your next project.

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