Open Notify vs Launch Library 2
Same instrument, two spec sheets — measured, not claimed.
Open Notify vs Launch Library 2: common questions
Which is more reliable, Open Notify or Launch Library 2?
On our scheduled checks, Launch Library 2 leads on measured uptime — Open Notify at —% versus Launch Library 2 at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Open Notify and Launch Library 2 need an API key?
Neither needs a paid key — Open Notify is callable with no signup, and Launch Library 2 is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Open Notify and Launch Library 2 from the browser?
Only Launch Library 2 is browser-friendly — it returns CORS headers over HTTPS. Open Notify needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Open Notify and Launch Library 2 free for commercial use?
Open Notify has unclear commercial terms, and Launch Library 2 has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.