Watchtower pulls every feed directly from each provider's own public API, on your device — nothing is proxied or re-hosted by us. This page lists every one of them and the licence it's used under.
A source marked NC restricts reuse to non-commercial apps. Watchtower is free, with no ads and no in-app purchases, which qualifies. Some sources ask only that we credit them "if possible" rather than requiring it — we credit all of them regardless.
Economic & financial data
Source
Credit
Licence
FRED®
Federal Reserve Bank of St. Louis — series retrieved from FRED, individually cited below
Citation required
FRED API
"This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis."
FRED API Terms of Use
S&P / Nasdaq / Nikkei indices (via FRED, your own key)
Live AIS ship positions, via your own AISStream key
Free API terms
Space
Source
Credit
Licence
CelesTrak
Orbital elements (celestrak.org); source data USSPACECOM / Space-Track.org
Free reuse with credit
ARISS
ISS orbital elements (live.ariss.org); source USSPACECOM / Space-Track.org
Free reuse with credit
SatNOGS
Satellite radio data & recordings — Libre Space Foundation & contributors
CC BY-SA 4.0
The Space Devs — Launch Library 2
Launch schedule data
Free, credit encouraged
Radio
Source
Credit
Licence
Radio Browser
Station directory (radio-browser.info)
Free, courtesy credit
Individual stations
Streams, names, logos and homepages belong to each station; played live from the station's own server, never recorded or re-hosted by us
Per-station terms
receiverbook.de
Shortwave/SDR receiver directory
Free, courtesy credit
Weather & environment
Source
Credit
Licence
NOAA Space Weather Prediction Center
Space weather data
Public domain
Open-Meteo
Weather data by Open-Meteo.com; air-quality data includes modified Copernicus Atmosphere Monitoring Service information
CC BY 4.0
MeteoAlarm
MeteoAlarm / EUMETNET member data
CC BY 4.0
NOAA / National Weather Service
Forecasts & alerts; tsunami bulletins via NOAA/NWS Tsunami Warning Centers
Public domain
USGS
Earthquake & volcano data
Public domain
Smithsonian Global Volcanism Program
Volcanic activity reports, with per-report source credit
Courtesy credit NC
GDACS
European Commission JRC / UN OCHA
CC BY 4.0
NASA EONET
Natural event tracker
CC0
NASA FIRMS
Active fire data
CC0
Safecast
Radiation data
CC0
U.S. EPA RadNet
Radiation monitoring
Public domain
Conflict, sanctions & cyber
Source
Credit
Licence
UCDP
Uppsala Conflict Data Program, Uppsala University — Hegre, Croicu, Eck & Högbladh (2020), "Introducing the UCDP Candidate Events Dataset," Research & Politics
CC BY 4.0
ACLED
Armed Conflict Location & Event Data — available if you connect your own ACLED account
ACLED Attribution Policy / EULA
OFAC
U.S. Treasury Office of Foreign Assets Control — sanctions list
Public domain
OpenSanctions
opensanctions.org
CC BY-NC 4.0 NC
RansomLook
Ransomware leak-site tracking
CC BY 4.0
abuse.ch Feodo Tracker
Malware C2 tracker
CC0
CISA
Known Exploited Vulnerabilities (KEV) catalog
CC0
IODA
Internet Intelligence Lab, Georgia Tech
Courtesy credit
Cloudflare Radar
Internet traffic & outage data
CC BY-NC 4.0 NC
Messaging
Source
Credit
Licence
Telegram Bot API
Optional — messages from a Telegram bot you connect yourself, via your own bot token
Telegram Bot API terms
Open-source software
Watchtower's globe visualisation and supporting libraries are built on: