blips turns community ADS-B and public weather data into a live, mouse-friendly air-traffic scope. It is pure Python, has no dependencies for its core experience, adapts to your terminal theme, and needs no account or API key.

Geography sets the stage: a dim block-colour sea with coastlines, borders and city labels picked out in braille. Live aircraft move over it as directional blips coloured by altitude, each with an ATC-style data block, a one-minute velocity leader and a fading trail. Between feed polls they glide on dead reckoning, so the sky moves the way the sky moves. Weather radar settles in underneath by default, showing the storms the aircraft are threading.

Install

With uv:

uv tool install blips

pipx install blips and pip install blips work too. blips requires Python 3.10+ on macOS or Linux, and a terminal with good Unicode support. Truecolor is recommended; 256- and 16-colour terminals are supported.

To try blips once without keeping it installed:

uvx blips --location jfk

Watch the sky

blips                              # centre on your approximate location
blips --location jfk               # or any place name
blips --location 51.47,-0.45 --zoom 1.5
blips --no-weather                 # leave out the weather-radar underlay
blips --print                      # one static frame for scripts or captures

Drag to pan, use + and - to zoom, and hover or click an aircraft for its full data readout and route when one is known.

Work the frequency

There is an approach-control sim hiding inside the scope. The live feed steps aside and simulated flights become yours: vector and sequence them around a real airport, clear approaches, hand departures to centre, and keep everyone three miles and a thousand feet apart.

blips --game                     # the airport nearest you
blips --game tpa                 # Tampa approach
blips --game egll                # Heathrow director
blips --game billings            # somewhere the terrain pushes back
blips --game --calm              # a gentler opening shift

Everything is typed into the command bar. Instructions chain, and pilots read the full clearance back:

> rpa5655 l 230 c 40
  Brickyard 5655, turn left heading two three zero, climb and maintain 4,000.

The sector is built around real runways, navaids, terrain and weather. At supported US airports its named SIDs and STARs come from the FAA's published procedures and can be drawn, inspected and flown. Traffic thickens as the shift goes on; separation losses, go-arounds, clean handoffs, prompt landings and caught bad readbacks all reach the shift book.

Press ? in a shift for a two-page command card, or read the full game manual for phraseology, procedures, scoring, voices and everything the frequency eventually throws at you. The --game flag remains absent from blips --help; now you know where it is.

Pilot voices

voice or Ctrl+V makes the frequency audible, with one voice kept for each flight. macOS uses the system say voices. On Linux, install the optional local Piper backend:

uv tool install 'blips[voice]'

The first transmission then downloads two multi-speaker models (about 150 MB) to ~/.cache/blips/voices. Speech is synthesized locally on the CPU; turning voice off returns to the text-only frequency.

Data and privacy

With no --location, blips asks ipinfo.io for an approximate location from your IP address. Pass a place or coordinates to avoid that lookup. Place-name search uses Open-Meteo. Live mode necessarily sends the visible area's centre and radius to the selected aircraft and weather providers; no blips account or telemetry service is involved.

Lineage

The braille geography, terminal-theme adaptation and live rendering loop began as the radar command in linecast, a sibling collection of terminal weather, sunlight, tide, radar and map tools. The weather-radar underlay came home from the same project. blips takes that shared visual language into the moving sky, then lets you work it.

License

MIT