Best Open Source Terra API Alternative
A curated collection of the 1 best open source and self-hosted alternatives to Terra API in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Terra API in 2026? The top open-source alternative is Open Wearables — Open-source health intelligence platform for wearable data.
Open-source health intelligence platform for wearable data
Open Wearables is an open-source health intelligence platform that transforms raw wearable data into actionable health insights. Built for developers and enterprises, it provides a unified API to connect with multiple wearable providers, compute customizable health scores, and deliver AI-powered recommendations—all while ensuring full data ownership through self-hosting. - Unified Wearable API: Single API to connect with 15+ wearable providers (Garmin, Whoop, Oura Ring, Apple Health, Strava, Fitbit, and more). - Health Scores: Open algorithms to compute customizable health metrics from wearable data. - AI Reasoning & Recommendations: Turn data into actionable insights with AI-powered coaching profiles. - OAuth Integration: Secure provider connections with standardized OAuth flows. - Real-time Webhooks: Receive instant updates without polling. - Self-Hosted Deployment: Full control over infrastructure, data storage, and compliance. - Enterprise Support: Custom deployments and dedicated support for business needs. - Extensive Integrations: Native support for major wearable platforms and health APIs. - Open Source: MIT licensed, available on GitHub. - Self-Hosting: Deploy on your own infrastructure with Docker, Kubernetes, or bare metal. - Tech Stack: Built with modern web technologies for scalability and performance. - Documentation: Comprehensive guides, API references, and provider coverage docs available at docs.openwearables.io. - Community: Active Discord community for support and collaboration. Built and maintained by Momentum.
About Terra API
Terra API is the leading unified health and fitness data API for developers, enabling seamless integration with 500+ wearables, sensors, and blood testing providers. Ship integrations with Apple Health, Garmin, Fitbit, Google Fit, Samsung, Oura, and more in minutes—without managing multiple OAuth flows or data parsers.
Key Features of Terra API
- Unified API: Single integration for 500+ health data sources including Garmin, Fitbit, Apple Health, Google Fit, Oura, WHOOP, Polar, Samsung Health, Strava, Withings, and 50+ additional providers.
- Standardized Data: Normalizes 5,000+ health metrics (activity, sleep, nutrition, heart rate, HRV, VO2max, CGM, menstrual cycle, body composition) into a consistent JSON schema.
- Real-Time Streaming: WebSocket API delivers live biometric data (e.g., beat-by-beat heart rate) for continuous monitoring and dynamic dashboards.
- HIPAA & GDPR Compliance: SOC 2 Type II certified with end-to-end encryption for data in transit and at rest.
- Health Scores & Rewards: Built-in tools to calculate health scores and incentivize user engagement.
- Blood Report Automation: API for lab testing providers to automate blood data ingestion and analysis.
- Planned Workouts: API for fitness apps to sync and track structured workout plans.
- Enterprise & Insurance Solutions: Scalable platform for healthcare applications, clinical research, and corporate wellness programs.
- Developer Tools: Native SDKs (JavaScript, Python, iOS, Android), REST API, and pre-built widgets for rapid integration.
Tech / Self-Hosting
Terra API is a fully managed cloud service with no self-hosting option. The platform handles authentication, data normalization, and compliance out of the box. Developers can integrate via REST API, WebSocket, or SDKs without managing backend infrastructure.
Terra is HIPAA compliant, SOC 2 certified, and built for enterprise-grade health data applications.