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Open-Notify-API

The premium Open Source alternative to Heavens-Above

🎯 Best for:Developers needing quick, free access to International Space Station telemetry.
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What is Open-Notify-API?

A lightweight wrapper for NASA data providing real-time ISS location and astronaut counts. It offers a simple RESTful interface for developers to integrate space data into applications.

Tech Stack
PythonPhysics & Astronomy

Why Open-Notify-API?

  • • No authentication required
  • • Extremely low latency
  • • Minimalist and easy to parse

Limitations

  • • Limited to ISS and crew data
  • • No historical data storage
  • • Dependent on NASA upstream availability
12/9/2025
Last Update
76
Forks
29
Issues
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License
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Competitor Cost
-$1,440
/ year (est. based on Heavens-Above)
Self-Hosted
$0
/ year
Team Size10 Users
150+
Launch Detailed Calculator
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