See what is happening
on and above the Earth.
Sentinel and Guardian are complementary local-first tools for environmental, orbital, space-weather, propagation, and station awareness. Each runs independently in a modern browser, under your control.
Real-time Earth and space situational awareness — clean, fast, and always-on.
- ISS, CSS, and two selectable amateur satellites with footprints and AOS/LOS
- Live global earthquake feed from USGS with magnitude-scaled markers
- Volcano overlay and tectonic plate boundaries (toggleable)
- Real-time grayline day/night terminator
- QTH-based local weather and alerts in station tooltip
- CelesTrak live TLE refresh — embedded fallback when offline
- Global city clocks with UTC reference
Space weather, propagation, and signal-environment awareness in one always-on dashboard.
- Full NOAA/SWPC dashboard — Kp index, SFI, solar flux, solar wind
- IMF Bt/Bz, D-RAP, particle flux, radio blackout forecast
- HF propagation conditions, MUF/foF2 indicators, and signal-environment context
- Aurora status and geomagnetic activity
- Station context with satellite tracking and AOS/LOS
- Custom satellite entry by NORAD ID or TLE
- Custom ticker with up to 5 live RSS/XML feeds
The right tool for your mission
Both tools run offline-first from a single HTML file. The difference is what each one was engineered to make visible.
One operational picture.
Sentinel and Guardian are designed to stand on their own while covering different parts of the same situational-awareness problem.
Sentinel keeps Earth activity, orbital context, local conditions, and timing visible.
Guardian concentrates on space weather, propagation, signal conditions, and station context.
Use either independently, or use both when you want a broader operational view.
Explore all Earth Shack Software →Choose the tool that fits your mission.
Both applications are local-first, one-time purchases that run in a modern browser. Choose the view you need, or use both as complementary situational-awareness tools.
U.S. sales only · One-time purchase · Instant download · Free updates for 1 year