Ably Realtime

Ably Realtime

Real-time experience infrastructure for scalable apps

Overview

Ably provides real-time experience infrastructure that lets businesses build apps with instant data updates, including real-time messaging and data delivery at any scale. It supports features such as chat, live scores, stock alerts, and GPS tracking through scalable APIs that manage streams, presence, and delivery, with Kafka integration and HIPAA compliance. It differentiates itself by prioritizing reliability under heavy load, HIPAA compliance, and native Kafka integration across industries, serving startups to large enterprises like Hubspot and Experity. Its goal is to enable organizations to run real-time applications with dependable performance at any scale, using usage-based pricing.

About Ably Realtime

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

Industries

Data & Analytics

Enterprise Software

Cybersecurity

Healthcare

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

  • Ably launched LiveObjects on March 25, 2026, addressing shared mutable state.
  • Ably AI Transport launched January 19, 2026, capturing AI agent streaming demand.
  • July 28, 2026 React Native push notifications improve mobile reach and retention hooks.

What critics are saying

  • Firebase, Supabase, and Pusher compress pricing and features across realtime messaging.
  • AI Transport targets a crowded AI infra stack; Temporal and Redis sit nearby.
  • Hyperscalers can bundle realtime primitives into cloud platforms, eroding Ably's standalone category by 2027.

What makes Ably Realtime unique

  • Ably owns delivery guarantees: ordered, resumable streams across devices and clients.
  • LiveObjects and AI Transport extend Ably beyond pub/sub into stateful application infrastructure.
  • React Native push, Python SDK v3, and Netlify support widen developer adoption.

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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
Linktree
$65M
Substack
$70M
Ably Realtime
$100M
ClickUp

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

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

0%

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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