Software Alternatives, Accelerators & Startups

Ably VS SockJS

Compare Ably VS SockJS and see what are their differences

Ably logo Ably

The realtime platform that just works. We power more WebSocket connections than any other pub/sub platform, serving over 2 billion devices monthly.

SockJS logo SockJS

SockJS is a browser JavaScript library that provides a WebSocket-like object.
  • Ably Ably homepage
    Ably homepage //
    2024-08-05

We help teams deliver resilient AI UX and high-performance live experiences that stay fast and in sync worldwide. We provide the global realtime layer for AI agents, chat, notifications, live dashboards, and collaboration - engineered to handle peak demand without self-managed infrastructure.

Teams like HubSpot and Intercom use Ably to avoid the cost and complexity of building and operating realtime systems, while still getting predictable performance at serious scale, handling 2T+ API operations per month. Ablyโ€™s Pub/Sub, Chat, and AI Transport products are unified by design, with developer-friendly APIs and SDKs that integrate across your stack.

  • SockJS Landing page
    Landing page //
    2023-07-24

Ably

Website
ably.com
$ Details
freemium
Release Date
2016 January
Startup details
Country
United Kingdom
Founder(s)
Matthew O'Riordan, Dr. Paddy Byers
Employees
50 - 99

SockJS

Website
github.com
Pricing URL
-
$ Details
-
Release Date
-

Ably features and specs

  • Scalability
    Ably is designed to handle a massive number of concurrent connections and messages, making it scalable for both small and large applications.
  • Real-time Messaging
    Ably provides robust real-time messaging capabilities with low latency, supporting use-cases like live chat, gaming, and real-time data streaming.
  • Global Presence
    Ably has a globally distributed network, ensuring low latency and high availability for users around the world.
  • Advanced Features
    It offers advanced features such as message history, presence, and push notifications, which can enhance the functionality of real-time applications.
  • Security
    Ably includes built-in security features such as TLS encryption, token-based authentication, and private channels to ensure secure communication.
  • Extensive Documentation
    The service provides extensive and well-organized documentation, making it easier for developers to integrate and utilize its features.
  • SDKs and Libraries
    Ably offers a wide range of SDKs and libraries for different programming languages and platforms, easing the development process.
  • Reliable Delivery
    It ensures reliable message delivery with features like message queuing and message de-duplication.

Possible disadvantages of Ably

  • Complexity
    Due to its wide range of advanced features, the initial learning curve can be steep for new users.
  • Cost
    For large-scale applications or extensive use of advanced features, the costs can add up, making it potentially expensive.
  • Vendor Lock-in
    Relying heavily on Ablyโ€™s platform-specific features may result in vendor lock-in, making it challenging to switch to other services in the future.
  • Dependence on Internet Connection
    As a cloud-based service, Ablyโ€™s performance is highly dependent on the quality and reliability of the internet connection.
  • Third-party Integration
    While Ably offers various integration options, integrating certain third-party services may require additional custom development or may not be as seamless.

SockJS features and specs

  • Cross-browser Compatibility
    SockJS provides a consistent WebSocket-like API that works across all modern browsers, including fallback options for older browsers that don't support WebSockets.
  • Fallback Options
    SockJS automatically uses the best-available transport method, such as JSONP, XHR streaming, or XHR polling, ensuring connectivity even in challenging network environments.
  • Reliability
    By offering multiple transport methods, SockJS provides reliable real-time communication even when WebSocket connections might be unstable or unsupported.
  • Ease of Use
    SockJS abstracts the complexity of managing various transport protocols, allowing developers to focus on implementing application logic rather than handling connection details.
  • Server Support
    SockJS is supported by several server-side implementations in different programming languages, enabling flexibility in choosing backend technologies.

Possible disadvantages of SockJS

  • Overhead
    The additional abstraction layer and fallback mechanisms may introduce some overhead compared to using native WebSockets directly, impacting performance to some extent.
  • Configuration Complexity
    Setting up SockJS with proper fallback handling and configuring the server-side components might be more complex than using native WebSockets, especially for simple use cases.
  • Less Control
    Developers have less control over the specific transport protocols being used, which might be a disadvantage in scenarios where such control is necessary for optimization or monitoring purposes.
  • Potential Latency
    Using fallback transports like polling can introduce higher latency compared to native WebSocket connections, which might not be suitable for highly time-sensitive applications.
  • Project Maintenance
    As an open-source project, SockJS relies on community support for maintenance and updates. This could pose a risk if development and support decline over time.

Analysis of Ably

Overall verdict

  • Ably is a reliable and efficient real-time messaging platform, well-suited for applications requiring high performance and scalability. It is generally well-regarded within the developer community for its ease of use and robust feature set.

Why this product is good

  • Features
    Ably provides a comprehensive suite of features such as pub/sub messaging, presence, and history.
  • Security
    It implements robust security practices including TLS encryption, token-based authentication, and private channels.
  • Integration
    Supports numerous protocols and provides SDKs for various programming languages, making it easy to integrate with different systems.
  • Reliability
    Ably offers high availability and low latency, ensuring messages are delivered in real-time.
  • Scalability
    The platform can handle millions of active connections and is designed for horizontal scaling.

Recommended for

  • developers building real-time applications like chat apps, dashboards, or multiplayer games
  • businesses in need of a scalable solution for live updates and notifications
  • teams looking for a platform with strong security and compliance credentials
  • organizations requiring integration with existing development workflows and tools

Ably videos

How to build a collaborative environment around your product

More videos:

  • Demo - How to build an avatar stack with Ably Spaces
  • Demo - Ably 101: Serverless WebSockets at scale

SockJS videos

No SockJS videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Ably and SockJS)
Developer Tools
88 88%
12% 12
Realtime Backend / API
100 100%
0% 0
App Development
0 0%
100% 100
Infrastructure As A Service (IaaS)

User comments

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Social recommendations and mentions

Based on our record, Ably seems to be a lot more popular than SockJS. While we know about 26 links to Ably, we've tracked only 2 mentions of SockJS. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Ably mentions (26)

  • AWS us-east-1 outage: How Ablyโ€™s multi-region architecture held up
    During this weekโ€™s AWS us-east-1 outage, Ably maintained full service continuity with no customer impact. This was our multi-region architecture working exactly as designed; error rates were negligibly low and unchanged throughout. Any additional round trip latency was limited to 12ms, which is below the typical variance in any client-to-endpoint connection, and well below our 40โ€“50ms global median; this is... - Source: dev.to / 10 months ago
  • Real-Time Sync Alternatives: Vaultrice vs. localStorage, DIY, Firebase, Pusher
    Services like Pusher and Ably are experts in real-time messaging. They provide robust APIs for pub/sub channels, allowing you to broadcast events to clients reliably. - Source: dev.to / 12 months ago
  • CometChat Alternatives โ€“ Comparing the Top 10 Competitors
    Ably is a real-time infrastructure platform that focuses on delivering low-latency, reliable messaging across global distributed systems. It's designed for developers building event-driven applications, including chat, but also supports broader use cases like live dashboards, GPS tracking, and collaborative tools. - Source: dev.to / about 1 year ago
  • Real-Time Authorization in a Chat Application with Permit.io and WebSockets
    For our web socket-based application, weโ€™ll be using Next.js and Ably, a service that allows us to easily integrate and manage real-time capabilities in our apps powered by web socket. - Source: dev.to / over 1 year ago
  • Curiosity: Using Ably.io Realtime Messaging as a Lightweight Database
    Ably offers various solutions for developers, with their most popular being realtime messaging based on the pub/sub model. When you publish a message to a channel, all devices connected to that channel receive it instantly. - Source: dev.to / over 1 year ago
View more

SockJS mentions (2)

  • WebSockets and Node.js - testing WS and SockJS by building a web app
    SockJS is a library that mimics the native WebSockets API. Additionally, it will fall back to HTTP whenever a WebSocket fails to connect, or if the browser being used doesnโ€™t support WebSockets. Like WS, SockJS requires a server counterpart; its maintainers provide both a JavaScript client library and a Node.js server library. - Source: dev.to / almost 3 years ago
  • Top WebSocket libraries for Node.js in 2022
    SockJS is a JavaScript library that provides communication between the client and the server in a way similar to the native WebSockets API. SockJS functions with a server counterpart in the form of sockjs-node and SockJS-client, a JavaScript client library. - Source: dev.to / over 4 years ago

What are some alternatives?

When comparing Ably and SockJS, you can also consider the following products

Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

Socket.io - Realtime application framework (Node.JS server)

Faye - Simple pub/sub messaging for the web

PubNub - PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.

SocketCluster - An open, scalable realtime engine for Node.js

Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.