Turn your Mac or PC into a maritime control tower.
Real ship traffic over Ibiza · radar sweep · no receiver · every 5 seconds
Authentic traffic
Position, speed and heading of every ship, received over AIS in real time through aisstream.io's shared network of receiving stations.
No receiver, no antenna
Unlike an ADS-B radar, this needs no hardware of your own — just a free aisstream.io API key, no SDR, no marine antenna.
Just one URL
It is a web page. Your screensaver simply shows it full screen — no proprietary apps, no accounts.
Free, open-source app. Grab it from its
GitHub releases page
(the latest .zip).
Unzip and double-click WebViewScreenSaver.saver. If macOS blocks the app,
go to System Settings → Privacy & Security and click "Open Anyway".
System Settings → Wallpaper → Screen Saver → select
WebViewScreenSaver → Options → untick "Fetch URLs Remotely" →
in the Addresses table, click Add URL and paste the URL below.
If you have more than one monitor, enable "Show on all displays" next to the preview.
Free, open-source app. Download the "installer" version (not the Microsoft Store one) from rocksdanister.github.io/lively. That way the screensaver runs without keeping the app open.
Open Lively → click + → Webpage/URL tab → paste the URL below → add it.
Lively settings (gear icon) → Screensaver tab → enable "use current wallpaper as
screensaver". To see it in the native Windows screensaver dialog, also install the
.scr from that same tab.
Build your own AIS screensaver
All the code is published on GitHub under the MIT license: the radar page (configurable coordinates, range, labels, locale…) and a Python server that connects to aisstream.io's free feed.
All you need is a free aisstream.io API key — no antenna, no SDR, no hardware of your own — and Python 3.
Yes — the page loads from a server in Ibiza every time the screensaver kicks in, so the machine needs to be online at that moment.
No. Neither the radar nor the recommended apps (WebViewScreenSaver, Lively Wallpaper) ask for registration or charge anything — the aisstream.io key is free too.
No — it uses aisstream.io's free, crowdsourced feed. If you ever set up your own AIS receiver, this screensaver keeps working exactly the same, without needing it.
Yes — open radar-en.html and go full screen (F11 on Windows, ⌃⌘F on Mac), no install needed.
Yes, without exception: every ship's position, speed and heading come from aisstream.io's real AIS feed, received by ground stations around the world.