Ably Realtime Alternatives (September 2025)

Power your real-time app with PubNub—the world's largest pub/sub network. Scale to 3 trillion API calls/month, with <30ms global delivery. Start building now!

The Real-Time Engagement Platform for meaningful human connections. People engage longer when they see, hear, and interact with each other. With Agora, you can embed vivid voice and video in any application, on any device, anywhere.

Add real-time video calls and livestreaming to your app with fully customizable UI, APIs to manage rooms, interactivity APIs to add chat, whiteboard, polls and more.

We provide all the tools and resources builders need to create incredible products — all backed by unparalleled, globally-balanced infrastructure, guaranteed reliability and security, a user-friendly interface, and end-to-end customer support.

Unlock the power of your communications data. The Nylas communication APIs remove complexity & empower teams to create seamless user experiences.

Experience powerful live streaming with Wowza Streaming Engine. Deliver high-quality content globally with unmatched reliability. Learn more.

Low-latency blockchain nodes for Web3 developers. Archival Ethereum, Optimism, Polygon, Arbitrum, BSC, Gnosis, Base. WebSocket, HTTP JSON RPC debug trace APIs

Engagespot is a notification infrastructure that helps developers build delightful multi-channel communication experiences in their web and mobile apps.

Simple, scalable and reliable. Hosted realtime APIs loved by developers and trusted by giants. Build live dashboards, notifications, geotracking, chat and more.

Infura's development suite provides instant, scalable API access to the Ethereum and IPFS networks. Connect your app to Ethereum and IPFS now, for free!

Svix is the enterprise ready webhook service. Build a state of the art webhook platform in minutes with our hosted webhook SaaS or our open source project. Don't reinvent the wheel, use webhooks as a service.

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

Plan, manage, and execute your business’s important moments using GlobalMeet, the most secure and reliable webcasting platform.

A flexible messaging platform that enables real-time integration and connects the Internet of Things (IoT).

Hookdeck is an Event Gateway. A platform giving engineering teams infrastructure and developer tooling to build, deploy, operate, and monitor event-driven applications.

The most cost-effective video infrastructure for businesses of all scale. From startups to the World Cup, modern software teams use Mux products to stream billions of minutes of video every day.

Fastly's edge cloud platform delivers faster, safer, and more scalable sites and apps to customers. Elevate your edge CDN, video delivery, security, and more.

Daily is the enterprise WebRTC platform to build real-time voice, video and AI at scale. Industry-leading SLAs, analytics, and APIs since 2016.

api.video lets you quickly and securely deliver on-demand and live-stream videos directly from your website, software, or app.

Confluent makes it easy to connect your apps, data systems, and entire business with secure, scalable, fully managed Kafka and real-time data streaming, processing, and analytics.

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

HiveMQ is the proven enterprise MQTT platform designed to connect, communicate, and control IoT data under real-world stress. Learn more.

Particle helps the world's most innovative companies power their connected machines, vehicles, and products.

Sync apps without internet

The fastest way to build & scale your project with Venly’s all-in-one set of Web3 tools. Amplify your enterprise's capabilities with our platform integrations.

Browse our developer-first, open source application delivery & hosting platform. Discover unmatched flexibility, up to 99.99% uptime, & exceptional support

EMQX: The most scalable MQTT Broker for IoT. Connect 100M+ IoT devices in 1 cluster at 1ms latency. Move and process millions of MQTT messages per second.

NodeReal empowers developers and investors to explore blockchain with the most reliable solutions and enables enterprises to generate business opportunities.

Kong is the most widely adopted API gateway and service mesh, powering the world’s APIs for modern architectures. Accelerate development and productivity today!

Dolby Millicast delivers broadcast quality live streaming at sub-second latency, enabling interactivity and fan engagement.

Build real time chat, voice and video calling experience with CometChat's flexible SDKs, APIs & UI Kits. Sign up now!

Whether you're a beginner developer, startup, web3 market leader, or a large enterprise, Alchemy makes multichain web3 development easy.

The easiest to use cellular platform for IoT devices. Scale deployments with a single global SIM and network in over 200+ countries across 500+ carriers.

Redpanda is a powerful, simple, and cost-efficient streaming data platform that is compatible with Kafka® APIs while eliminating Kafka complexity.

Zuplo is the API management platform for developers. Build, deploy, and scale APIs faster with Zuplo.

Edgio develops and delivers online experiences faster, safer, and with more control. Put your online business on the leading edge with Edgio!

Advance your app's capabilities: Integrate LinkedIn and WhatsApp for streamlined messaging and improved user experience.

Experience sub-0.5 second latency with Ant Media Server, compatible with WebRTC, CMAF, HLS, RTMP, RTSP, SRT, Zixi, and additional protocols.

Bridge the development gap between Web2 and Web3 with Moralis’ powerful Web3 APIs.

Simplify API onboarding and consumption with an API Portal that’s purpose-built for API teams to create, secure, market, and monetize API products.

Build custom mobile apps and web dashboards with our drag-and-drop app builder. Get a complete, hardware agnostic IoT solution with an integrated back-end infrastructure, private cloud, device management and user management tools. Publish your own app in AppStore and Google Play with our white-label option.

Kubernetes message broker and message queue platform. An open-source project providing the most efficient way to connect microservices.

Power your applications with real-time payment data. Build innovative card-linking applications by connecting Visa, Mastercard and Amex cards to loyalty and marketing services all in one place.

Build and scale your IoT solution anywhere with emnify - the world’s first cloud-native connectivity platform and our global IoT SIMs.

Chainstack is a leading blockchain infrastructure providing company. Build, run and scale blockchain applications using Chainstack nodes.

Blockdaemon offers top-tier blockchain infrastructure, with powerful wallet, node management, staking solutions, and unmatched support.

Ingest events into Pub/Sub to stream to BigQuery, data lakes and databases; messaging middleware for streaming analytics and service integrations

With Akamai Ion, explore how you can deliver great experiences on every form factor and device, or risk reduced customer satisfaction and brand perception.

Drive more revenue with a 360-degree multi-channel experience for your target accounts.

Discover enterprise-grade staking and node infrastructure: Ethereum, Polygon, and more. Enjoy secure, fast, and reliable staking and node services with Validation Cloud.

Embark on your Web3 journey with the streamlined, scalable, and secure development platform. Luniverse provides a full-stack web3 development platform with node service, multichain API, and data analytics features.

Build your application on Instaclustr's fully hosted and managed Apache Kafka as a service solution. Start your free trial now.

Access our top-tier SMS gateway services at an affordable price globally. No subscriptions and full compliance. Create a free account >>

Accelerate application development with 100% serverless GraphQL and Pub/Sub APIs. Get 250,000 API requests free per month for 12 months.

IoT network solutions that are optimized to easily connect your device to the Internet over Wi-Fi, cellular, NFC, or BLE.

We're the experience optimization partners pushing brave ideas from the inside out. The only digital experience platform you need.

Appwrite is an open-source platform for building applications at any scale, using your preferred programming languages and tools.

DevOps serverless application tools to run background tasks with Docker containers and manage messaging queues with cloud elasticity and no vendor lock-in

Wyng helps innovative brands launch engaging digital experiences to grow their audience, collect zero-party data, and drive sales.

Build your very own omnichannel customer engagement platform with a no-code builder or customize it with Video, Voice, SMS, and chatbot APIs from EnableX.

Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

Build invincible apps with Temporal's open-source durable execution platform to guarantee successful execution, even in the presence of failures.

webinar.net is a feature-packed, easy-to-use on demand webinar platform, allowing you to setup fully branded, online presentations with unlimited attendees in less than 60 seconds.

Try for free. Check Uptime with our Award-Winning Website Monitoring Tools and Get Notified Instantly.

Bandwidth is an enterprise communications platform with voice, messaging, and emergency APIs for your communications stack.

Enter the website URL to Know your Security Score!

Fast & reliable CDN: CacheFly CDN Services. Try our FREE TRIAL and get guaranteed performance with global delivery for your content.

Taplytics provides zero bloat, cross-platform AB Testing solutions that power the experiences within today's leading apps and websites. Learn more.

World’s Most Expressive API for building Disruptive Prop-Tech.

Thingsup is a highly scalable & secure cloud-based IoT Monitoring Platform development company to connect your internet of things devices.

Managed RabbitMQ servers hosted in the cloud. Decouple your applications with the speed of CloudAMQP, a highly available message queuing service.

Build, grow, and deliver immersive experiences for your community. Host engaging discussions, live streams, chats, and more via an all-in-one community platform.

An API to convert HTML/CSS documents to PDF. PDFShift is the reliable, Up-to-date and high-fidelity conversion API with no maintenance costs.

Elevate your B2B marketing with Hushly. Personalize experiences, boost conversions, and achieve superior outcomes. Transform your marketing strategy today.

Addressable's platform uses on-chain data and AI for precise user acquisition, ensuring exceptional growth in Web3 marketing

Explore Rocket.Chat, where we put data privacy into every conversation and enable teams to collaborate seamlessly.

GigaSpaces modernizes enterprise architectures to drive digital transformation with unparalleled speed, performance and scale.

Novu empowers developers and product teams to collaborate seamlessly on notification management. Its unified platform provides centralized content, type-safe schemas, and reusable components, facilitating efficient workflows. With code-first and no-code tools, teams can easily customize and deploy notifications across multiple channels like email, SMS, push, chat, and in-app. Novu enhances communication, reduces friction, and ensures reliable, scalable, and personalized user experiences while maintaining full visibility and control over notifications.

Aiven for Apache Kafka – Managed event streaming Kafka service ✓ Microservices ✓ Event-driven architecture ✓ Streaming pipelines ✓

Elevate efficiency with APISCRAPY's AI-Driven Web Scraping & workflow automation. Streamline processes seamlessly. Embrace the future of productivity.

Dacast's Video Streaming Software is the leading Online Video and Hosting Platform. Stream live and on demand video leveraging a video API and 24/7 support.

Reach more people, interact more effectively and grow your audience. Powerful live event chat to engage your audience in real-time.

Plivo’s SMS API and Voice API platform enables businesses to communicate with their customers on a global scale. Sign up for free now.

Save time, drive traffic, and focus on your business with Publer. Discover how easy social media management can be with our all-in-one tool.

Qubitro is an IoT device and data platform that provides a secure, scalable, and reliable IoT cloud service for your IoT projects.

Launch usage based pricing models with Togai's reliable metering & billing platform. Usage based billing infrastructure built to handle scale of any size.

Symphony is the most secure and compliant markets’ infrastructure and technology platform, where solutions are built or integrated to standardize, automate and innovate financial services workflows. It is a vibrant community of over half a million financial professionals with a trusted directory and serves over 1000 institutions. Symphony is powering over 2,000 community built applications and bots.

eWebinar lets you make demos, onboarding and training available on demand at scale by offering them as interactive pre-recorded webinars with live chat.

The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe

Explore a highly curated API marketplace focused on reliability, scalability, and quality. Access AI & Machine Learning, Content, Finance, Stock, and more APIs.

Linkerd adds critical security, observability, and reliability to your Kubernetes stack, without any code changes.

Connect, motivate, align, and engage employees, channel partners, sales team, and consumers with our engagement, rewards, commission, and incentive technology.

Bitmovin empowers businesses to expand their viewer reach and stream video globally with unmatched reliability, scalability, and the highest quality across

Postcoder is the API for address lookup & form validation. Improve your conversion rates and capture better quality customer data.

Mylighthost - is one of the best web hosting service provider with 100% uptime guarantee, 24/7 expert support, unmatched speeds, Next generation DDoS protection and the latest server hardware and software. Connect with us by the variety of hosting plans.

Our Enterprise VDI platform delivers virtual desktops and apps across multiple clouds and on-prem data centers with industry-leading reliability.

Castr is a live video streaming solution platform that delivers enterprise-grade live videos globally with CDN. Live event streaming, video hosting, pre-recorded live, multi stream – all in one place using Castr.

We believe students and staff deserve a future-forward student services platform that does it all with no hiccups. That’s why we’re reinventing EdTech for an era that demands and deserves more.

Vercel's Frontend Cloud gives developers the frameworks, workflows, and infrastructure to build a faster, more personalized Web.