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Ably Realtime

Real-time experience infrastructure for scalable apps

Overview

Ably provides real-time experience infrastructure that lets apps push updates instantly, from small projects to large product suites. It delivers continuous data streams, presence, and message delivery through scalable APIs, with native Kafka integration and HIPAA-compliant handling for healthcare data. The service stands out for reliability under heavy load, healthcare suitability, and seamless integration with Kafka, serving customers from startups to large enterprises. Its goal is to help organizations power real-time applications with dependable performance at any scale.

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About Ably Realtime

Simplify's Rating
Why Ably Realtime is rated
B
Rated B on Competitive Edge
Rated A on Growth Potential
Rated C on Differentiation

Industries

Data & AnalyticsEnterprise SoftwareCybersecurityHealthcare

Company Size

51-200

Company Stage

Series B

Total Funding

$78M

Headquarters

London, United Kingdom

Founded

2016

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Simplify's take

What believers are saying

  • July 2026 React Native push notifications broaden mobile adoption across one codebase.
  • April 2026 Python SDK v3 targets booming AI backends with resumable streaming.
  • November 2026 LiveObjects and message-reaction launches deepen stickiness for chat and collaboration teams.

What critics are saying

  • MAU pricing creates churn if customers like Pusher or PubNub undercut enterprise renewals.
  • Ably's GitHub and docs show heavy product sprawl; focus slips by 2027.
  • A platform outage or security incident would destroy trust in its core reliability claim.

What makes Ably Realtime unique

  • Ably prices on MAUs, aligning cost with users, not message volume.
  • Its one platform spans Pub/Sub, Chat, Spaces, LiveObjects, LiveSync, and AI Transport.
  • November 2026 SDKs unify realtime, push, and Python AI workflows across devices.

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Funding

Total Funding

$78M

Above

Industry Average

Funded Over

3 Rounds

Notable Investors:
Series B funding is typically for startups that have proven their business model and need more funding to expand rapidly—often by entering new markets or adding more products. Investors are usually venture capital firms that specialize in later-stage investments.
Series B Funding Comparison
Above Average

Industry standards

$35M
$45M
$65M
$70M
$100M

Benefits

  • Remote Work Options
  • Flexible Work Hours
  • Paid Vacation
  • Parental Leave
  • Home Office Stipend
  • Professional Development Budget
  • Health Insurance
  • Mental Health Support
  • Wellness Program
  • Life Insurance
  • Commuter Benefits
  • Sabbatical Leave

Growth & Insights and Company News

6 month growth

-1%

1 year growth

0%

2 year growth

0%
Ably
Jul 28th, 2026
Ably Pub/Sub now supports React Native push notifications.

Ably Pub/Sub now supports React Native push notifications. Ably Pub/Sub now supports React Native push notifications. Devices activate themselves, subscribe to channels for alerts, and receive messages through FCM and APNs. No more manual device registration through the push admin API. Until now, sending push notifications to a React Native app with Ably meant registering devices manually through the push admin API, usually from a server. The new plugin moves activation where it belongs: onto the device. Ably has added first class support for React Native apps receiving push notifications through the Ably PubSub JavaScript SDK. From version 2.25.0, the new ably/react-native-push plugin lets a React Native device activate itself as a push target, subscribe to channel-based notifications, and receive messages through FCM on Android and APNs on iOS, using the same unified API that already powers push notifications on the web, iOS, and Android with Ably. What can you do with React Native push notifications? * Reach users when the app is closed. Realtime messages delight users while your app is open. Push notifications carry the same events (a new chat message, an order update, a price alert) to the device when it isn't. * Notify at channel granularity. Devices subscribe to the channels they care about, and one published message fans out to every subscribed device. No device lists to maintain in your backend. * Android and iOS from one codebase, delivered through FCM registration tokens or raw APNs device tokens. Your app declares which transport each token belongs to. * Bring your own modules. The SDK adds no native dependencies. You pass in your storage (any implementation of the @react-native-async-storage/async-storage interface) and a callback that returns a push token, typically wrapping @react-native-firebase/messaging. * Device-side activation with push.activate: the SDK generates and persists the device identity, registers it with Ably, and keeps the registration across app restarts. * Publish via channels to every subscribed device, or publish directly to a device ID or client ID. How it works. Your app supplies the two things the SDK cannot provide itself in React Native, persistent storage and token acquisition, and the plugin handles registration, state, and persistence: import {Realtime} from 'ably'; import ReactNativePush from 'ably/react-native-push'; import AsyncStorage from '@react-native-async-storage/async-storage'; import messaging from '@react-native-firebase/messaging'; const Push = ReactNativePush.create({ storage: AsyncStorage, requestToken: async => ({transportType: 'fcm', token: await messaging.getToken,}),}); const client = new Realtime({ authUrl: '/auth', plugins: {Push}}); // Activate the device and subscribe a channel to deliver pushes to it await client.push.activate; await client.channels.get('orders:1234').push.subscribeDevice; Then any publisher, your server, another client, or the Ably CLI, triggers the notification by publishing to the channel with a push payload: await rest.channels.get('orders:1234').publish({ name: 'update', data: {status: 'shipped'}, extras: {push: { notification: { title: 'Order update', body: 'Your order has shipped.'},},},}); Send your first notification. Follow the React Native getting started guide to go from a fresh project to a notification on a physical device, or read the push notifications docs for the full picture.

Maeil Business News Korea
Aug 29th, 2025
Ably secures $71M from Alibaba

South Korean fashion platform Ably Corp. secured a $71 million investment from China's Alibaba Group, acquiring a 5% stake. This marks Alibaba's first investment in a Korean e-commerce platform. Ably, now valued at over 3 trillion won, has become a unicorn. The company plans to raise an additional 100 billion won from Silicon Valley and sovereign wealth funds. Concerns arise over Alibaba's growing influence in Korea, with AliExpress expanding its presence.

Ably
Jul 4th, 2025
Say more with less: Introducing message reactions in Ably Chat

Today, Ably Realtime Ltd. is excited to introduce Message Reactions in Ably Chat - a quintessential part of any modern chat experience, now available as a native feature.

Ably
Apr 2nd, 2025
Realtime innovation, optimized costs: Ably's solutions for cost efficiency at scale

To help with this, Ably Realtime Ltd. has introduced server-side batching and conflated subscriptions - two powerful optimizations in Ably Pub/Sub that significantly reduce message count, lower bandwidth usage, and optimize processing overhead.

Ably
Jul 11th, 2023
Channel subscription now possible with new Python Realtime SDK

This is why Ably Realtime Ltd. has released a new Python Realtime SDK component that enables developers to integrate Ably's realtime functionality into their Python applications.

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