Software Alternatives, Accelerators & Startups

Ably VS RxDB

Compare Ably VS RxDB and see what are their differences

Ably logo Ably

Serious realtime infrastructure

RxDB logo RxDB

A fast, offline-first, reactive Database for JavaScript Applications
  • Ably Landing page
    Landing page //
    2023-06-23

Ably is an enterprise-ready pub/sub messaging platform. We make it easy to efficiently design, quickly ship, and seamlessly scale critical realtime functionality delivered directly to end-users. Everyday we deliver billions of realtime messages to millions of users for thousands of companies.

We power the apps people, organizations, and enterprises depend on everyday like Lightspeed System’s realtime device management platform for over seven million school-owned devices, Vitac’s live captioning for 100s of millions of multilingual viewers for events like the Olympic Games, and Split’s realtime feature flagging for one trillion feature flags per month.

We’re the only pub/sub platform with a suite of integrated services to build complete realtime functionality like showing a driver’s live GPS location on a home-delivery app, instantly loading the most recent score when opening a sports app, while automatically handling reconnection when swapping networks. We guarantee low latency delivery of all messages to subscribers over a secure, reliable, and highly available global edge network.

Developers from startups to industrial giants choose to build on Ably to simplify engineering, minimize DevOps overhead, and increase development velocity.

  • RxDB Landing page
    Landing page //
    2023-07-20

RxDB, which stands for Reactive Database, is a JavaScript-based NoSQL database designed for a wide range of applications such as websites, hybrid apps, Electron apps, progressive web apps, and Node.js. The "reactive" aspect of RxDB allows you not only to retrieve the current state of the database but also to subscribe to all changes in the state, including query results or specific fields within a document. This feature is particularly advantageous for real-time user interface applications, as it facilitates development and offers notable performance benefits. Additionally, RxDB can be utilized to build efficient backends in Node.js.

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

RxDB videos

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

+ Add video

Category Popularity

0-100% (relative to Ably and RxDB)
Developer Tools
61 61%
39% 39
Databases
0 0%
100% 100
Mobile Push Messaging
100 100%
0% 0
NoSQL Databases
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Ably and RxDB

Ably Reviews

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RxDB Reviews

10 Best Open Source Firebase Alternatives
Reactive Database or RxDB is a real-time NoSQL database for JavaScript apps such as progressive web apps, electron apps, PWAs, hybrid apps, and websites. Reactive means that you get to query the current state while subscribing to all state changes like the result of a single field of a document or query.

Social recommendations and mentions

Based on our record, Ably should be more popular than RxDB. It has been mentiond 20 times since March 2021. 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 (20)

  • Essential guide to WebSocket authentication
    Of course, if this all sounds like a headache, you might consider Ably. Apart from solving the authentication problem, Ably provides additional features you’d need to implement on top of WebSockets like Presence and message queues, and provides production guarantees that will be time-consuming or costly to achieve on your own like 99.999% uptime guarantee, exactly-once delivery, and guaranteed message ordering. - Source: dev.to / 5 months ago
  • The top real-time notification services for building in-app notifications
    Ably is a robust real-time data delivery platform based on WebSockets with features like message ordering, presence, and connection recovery. Customers include Toyota, HubSpot, and Verizon. - Source: dev.to / 7 months ago
  • Serverless WebSockets with Ably
    I reached for Ably because they had a booth at the 2022 Jamstack Conf, and probably gave me a sticker or something. (You hear that? Sponsor your local tech conference!) They have a generous free tier, which is an absolute requirement for this space, where devs like me usually want to try a product on something that doesn't make us any money, and then that translates (ideally) into recommending it in our... - Source: dev.to / 9 months ago
  • Cursor Everywhere: An experiment on shared cursors for every website
    A realtime protocol like WebSockets seemed like a logical way to share real-time updates of cursor positions. Working at Ably, it was a no-brainer to use it as my WebSocket-based pub/sub broker. A pub/sub broker simplifies many aspects of projects like this, often coming with built-in features that speed up development. For instance, I wanted each browser's cursor position to be continually available to other... - Source: dev.to / 9 months ago
  • Laravel Realtime with Ably & Laravel Livewire
    So let's get started. Firs thing to do is to create an account in Ably, so head there and create your account. Then, you have to create an application, give it a name, and we are good to go. The next thing to do, is to grab the API key. From the Ably dashboard, head to API Keys, you will find 2 keys, we are interested in the first one. - Source: dev.to / about 1 year ago
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RxDB mentions (10)

  • Ask HN: How Can I Make My Front End React to Database Changes in Real-Time?
    I'm interested in this problem also! I think there is a large overlap with projects that market/focus on offline-first experiences. AFAIK this problem can be solved by: 1) Considering a client-side copy of the database that gets synced with the remote DB. This is an approach [PowerSync](https://www.powersync.com/) and [ElectricSql](https://electric-sql.com/) and [rxdb](https://rxdb.info/) take! - Source: Hacker News / about 1 month ago
  • You can't leak users' data if you don't hold it
    Hey, after I posted that, I went and gave a second look online to see if I could find something that would allow me to develop a local-first app with offline persistence and syncing capabilities. I ended up finding some possibilities out there that could potentially help me build stuff. One of them is RxDB [1], which offers WebRTC syncing - you'd still need a signaling server, I suppose, but all sensitive... - Source: Hacker News / about 2 months ago
  • SignalDB: Bringing Meteor-Like Reactivity to the Modern Age
    About a year ago, I discovered a cool offline-first framework called RxDB. Initially, I thought that on the frontend side, this was exactly what I had been searching for over the past years. After tinkering around and even using it in production for some time, I realized that it wasn't well-suited for my intended use. RxDB was initially created as an RxJS layer for PouchDB with a server replication interface.... - Source: dev.to / 7 months ago
  • Show HN: ElectricSQL, Postgres to SQLite active-active sync for local-first apps
    Congrats to the team. Once I’ve tried https://rxdb.info/ and it wasn’t funny at all to do the remote replication (PG) and to deal with conflicts. I do need to check this out! - Source: Hacker News / 8 months ago
  • What did I do to deserve a JavaScript database?
    For anyone who wants to not only make jokes but actuall learn something, I recommend to start with exploring the github repo: https://github.com/pubkey/rxdb. Source: over 1 year ago
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What are some alternatives?

When comparing Ably and RxDB, 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.

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

Supabase - An open source Firebase alternative

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

PouchDB - Open-source JavaScript database inspired by Apache CouchDB that's designed to run well within the browser