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Open Wearables is a self-hosted, open-source API that unifies data from Garmin, Apple Health, Suunto, Whoop, Polar and more into one shared model. It eliminates per-user fees and vendor lock-in, allowing you to build AI-ready health products in days. | API Funnel is a visual no-code canvas for connecting external APIs, transforming their responses, and publishing unified REST endpoints at real, callable URLs, without writing any backend code. Wire up REST, GraphQL, or SOAP inputs, map and transform fields using 70+ built-in transformers, apply conditional logic, and deploy instantly. |
Unified API, Multi-provider integration, Apple Health, Garmin Connect, Oura Ring, Whoop, Polar, Suunto, Self-hosted, Open source, PostgreSQL, TimescaleDB, FastAPI, Docker deployment, HIPAA compliant, OAuth flows, Real-time data sync, AI-ready infrastructure, Time-series analytics, Developer-friendly, REST API, MCP integration, Custom deployment, Data ownership, Healthcare compliance, Wearables SDK, Health intelligence, Biomarker tracking, Activity data, Sleep metrics, Heart rate variability, Steps and calories, Workout analysis, Recovery insights | Visual drag-and-drop canvas, REST, GraphQL and SOAP input nodes, 70+ field transformers, if/else conditional logic, live endpoint publishing, custom domains, OpenAPI documentation generation, AI natural-language canvas editing, credential encryption, rate limiting and IP blacklisting |
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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.

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.

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

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.
Kong is a scalable, open source API Layer (also known as an API Gateway, or API Middleware). Kong controls layer 4 and 7 traffic and is extended through Plugins, which provide extra functionality and services beyond the core platform.

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.

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.
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.

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.