Compare Open Wearables to these popular alternatives based on real-world usage and developer feedback.

MedAlly is a healthcare-focused AI assistant designed to support clinicians with structured clinical documentation, encounter summaries, and workflow assistance. It helps reduce administrative workload by converting clinical interactions into organized medical notes while fitting into existing healthcare systems. MedAlly supports efficiency and accuracy without replacing clinical decision-making.

Firebase is a cloud service designed to power real-time, collaborative applications. Simply add the Firebase library to your application to gain access to a shared data structure; any changes you make to that data are automatically synchronized with the Firebase cloud and with other clients within milliseconds.

It enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed.

An open source Java framework that focuses on making integration easier and more accessible to developers.

It is a simple to use, blazing fast, and thoroughly tested WebSocket client and server implementation.

SignalR allows bi-directional communication between server and client. Servers can now push content to connected clients instantly as it becomes available. SignalR supports Web Sockets, and falls back to other compatible techniques for older browsers. SignalR includes APIs for connection management (for instance, connect and disconnect events), grouping connections, and authorization.

Pusher is the category leader in delightful APIs for app developers building communication and collaboration features.

Cloud Pub/Sub is a fully-managed real-time messaging service that allows you to send and receive messages between independent applications. You can leverage Cloud Pub/Sub’s flexibility to decouple systems and components hosted on Google Cloud Platform or elsewhere on the Internet.

Supabase is currently in early-Alpha .It is an open-source Firebase alternative. It adds realtime and RESTful APIs to your PostgreSQL database without a single line of code.
Unlike traditional enterprise messaging systems, NATS has an always-on dial tone that does whatever it takes to remain available. This forms a great base for building modern, reliable, and scalable cloud and distributed systems.

It is a service designed to allow developers to integrate disparate data sources. It is a platform somewhat like SSIS in the cloud to manage the data you have both on-prem and in the cloud.

PubNub makes it easy for you to add real-time capabilities to your apps, without worrying about the infrastructure. Build apps that allow your users to engage in real-time across mobile, browser, desktop and server.
It is built as a module for the Nginx web server. It can be configured as a standalone server, or as a shim between your application and hundreds, thousands, or millions of live subscribers. It can buffer messages in memory, on-disk, or via Redis.

It is a framework for building service-oriented applications. Using this, you can send data as asynchronous messages from one service endpoint to another. A service endpoint can be part of a continuously available service hosted by IIS, or it can be a service hosted in an application.

It is a standard for health care data exchange, published by HL7. Interoperability protocol that qualifies for MACRA and 21st Century Cures laws.

Ably offers WebSockets, stream resume, history, presence, and managed third-party integrations to make it simple to build, extend, and deliver digital realtime experiences at scale.

GUN is a realtime, decentralized, embedded, graph database engine.

SocketCluster is a fast, highly scalable HTTP + realtime server engine which lets you build multi-process realtime servers that make use of all CPU cores on a machine/instance. It removes the limitations of having to run your Node.js server as a single thread and makes your backend resilient by automatically recovering from worker crashes and aggregating errors into a central log.

SurrealDB is a newsql multi-model database, that operates in schemafull or schemaless mode, with tables, inter-document record links (no JOINs), and graph database modelling functionality.

Scalable Server for Realtime Web Apps with JSON structures that can be read, manipulated and listened to, messages that can be sent to one or more subscribers, and request response workflows, between two clients or servers.

It is an integration platform for developers to build and run workflows that integrate apps, data, and APIs — no servers or infrastructure to manage.

It unlocks a new world of creativity for game developers by providing a cross-platform "backend-as-a-service" built exclusively for games. We give game developers the tools, technologies, and know-how they need to have a trouble-free launch day, and profitable day-to-day operations after that.

It is an open source backend for your next SaaS and mobile app in 1 file. It could be used as a standalone app or as a Go framework/toolkit that enables you to build your own custom app specific business logic and still have a single portable executable at the end.

A cloud service designed to power enterprise-grade web and mobile applications that require support for large numbers of users, complex data and transactional requirements, comprehensive role-based security and a modern look-and-feel.

Back4app accelerates backend development, improves development productivity, reduces time to market, and let you scale applications without managing infrastructure.

It is cloud data integration platform designed for marketing, sales, and customer support teams of medium-sized companies and large enterprises.

Faye is a set of tools for simple publish-subscribe messaging between web clients. It ships with easy-to-use message routing servers for Node.js and Rack applications, and clients that can be used on the server and in the browser.

Xano is a unified backend that combines database, logic, APIs, integrations, auth, and agent orchestration on managed, auto-scaling infrastructure, so developers can build and deploy without backend sprawl.
Horizon provides a complete backend that makes it dramatically simpler to build, deploy, manage, and scale engaging JavaScript web and mobile apps. Horizon is extensible, integrates with the Node.js stack, and allows building modern, arbitrarily complex applications.

It is a web server to push data to a browser, without the browser explicitly requesting it. It is an umbrella term, encompassing multiple techniques for achieving this interaction.

It is a file formats API provider, provides .NET, Java, Android, SharePoint, Reporting Services, and cloud-based APIs for document generation, conversion, and automation.

It is a cross-platform development environment and deployment infrastructure available in both Single-User and Client-Server. 4D contains it's own high level programming language and a RDBMS with a SQL engine. 4D is an IDE and a Compiler that facilitates the creation of machine code directly executable on both Windows and Mac.

It is a simple to use yet thoroughly optimized implementation of HTTP and WebSockets. It comes with built-in pub/sub support, HTTP routing, TLS 1.3, IPv6, permessage-deflate and is battle tested as one of the most popular implementations, reaching many end-users daily.

It is a development and runtime platform which simplifies and shortens mobile application development process. The platform removes the need to develop backend functionality by providing reusable server-side services via APIs. The APIs are packaged into native libraries available for all major client-side environments - Andoid, iOS, JavaScript, .NET, ActionScript and REST. The default backend logic can be modified with custom server-side code. The platform is available as an online service and a downloadable Enterprise product which can be deployed in any environment.

It is a complete and mature solution for both the stateless and stateful components of your backend.

TradingCalcs provides a fast, accurate financial-math engine used for trading, risk management, and quantitative analysis. It powers calculations for position sizing, P/L, expected move, breakeven levels, risk of ruin, options modeling, forex pip values, futures notional exposure, and more. Developers can use TradingCalcs today through embeddable components, with a public REST API and SDK currently in development. Designed for fintech builders who need precision, clarity, and zero friction.

Pushpin is a reverse proxy server that makes it easy to build realtime web services. The project is unique among realtime push solutions in that it is designed to address the needs of API creators.

Bridges the gap between care systems and applications built on Google Cloud. By supporting standards-based data formats and protocols of existing healthcare technologies.

Telepat is an open-source backend stack, designed to deliver information and information updates in real-time to clients, while allowing for flexible deployment and simple scaling.

It is a blazing fast, universal web app backend for making realtime single page apps. Delight your end-users with superior speed and the lowest latency.

Syncano is a backend platform to build powerful real-time apps more efficiently. Integrate with any API, minimize boilerplate code and control your data - all from one place.

It is a technology company that provides web analytics and content optimization software for online publishers.

The powerful all-in-one tool for easily connecting apps, integrating data, building APIs and acting on events.

Allows you to extend macOS's native file handling capabilities via third-party file systems.

It allows you to host your cloud-to-cloud, cloud-to-on-premises integrations and API backends on a scalable cloud platform.

Fanout makes it easy to build realtime APIs and apps. The product is a cross between a reverse proxy and a message broker. Receivers subscribe to channels, and published data is delivered in realtime.

It is a hosted realtime DB with RESTful APIs and supporting libraries in JS, NodeJS and Go

Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.

Simperium is a new kind of data layer. As your app reads and writes data, Simperium circulates that data everywhere it's needed. You add a Simperium library to your app and initialize it. This library keeps a persistent connection to the Simperium hosted service. The Simperium libraries and service work together to efficiently move data around for your users.