Inside Systems Pty Ltd

Providing elegant solutions to demanding and complex problems

RealTraffic – fly with live and real air traffic in your simulator

Live statistics: Total time flown by all users since January 2017: 30077.1 days ( = 82 years, 4 months, 25 days )

How does it work, and what does it do?

RealTraffic consolidates data from multiple international ADS-B and multilateration networks to obtain information about other airplanes near the position of your (simulated) aircraft – in realtime, live! Depending on which simulator you are flying, it then injects this traffic so you can fly with it, or follow it.

Supported Flight Simulators

Simulator Support
FSX/P3D/LiveTraffic Fully supported using the PSXT add-on, and via LiveTraffic (see X-Plane entry for details below).
Aerowinx PSX Fully supported natively. Allows injection of up to 7 aircraft (PSX limitation). Traffic is shown both in the windshield and the TCAS system.
X-Plane Supported via the LiveTraffic plugin. Check for information on how to install this with X-Plane. Or check their Forum link for LiveTraffic support.
Spotter Mode Manually select your position from the airport list or enter latitude/longitude manually. Don’t use this mode if you’re flying with a simulator, as obviously RealTraffic will not follow your position.

Version 7.2.71:

  • A bug introduced in 7.1.70 makes this update mandatory, apologies!
  • Minor internal improvements.
  • Waypoint types are now drawn correctly: Triangle for regular waypoints, a star for RNAV waypoints.
  • Graphics optimised for smoother dragging and redrawing depending on zoom level.

In spotter mode, you can display air traffic in any area you manually enter – either by selecting an airport, or by manually entering the latitude/longitude of the point of interest. This will broadcast traffic on the network in the same way as if you were running a simulator. This allows you to view traffic in third party EFB apps such as Foreflight without the overhead of having to run the full flight simulator software.

If you want traffic to be available wherever your simulator is however, you should not use spotter mode, as traffic is only displayed in an approximately 100 NM radius around the current position.

Download links for version 7.2.71


  • Please download the software and test whether it does what you want it to prior to purchasing a license. During the demonstration time the software is fully functional! If it doesn’t work during the demo, it won’t work after purchasing a license!
  • You can issue yourself a free 1h trial license below. Make sure you set up the simulator software before issuing the license, so you have the full hour of testing available!
  • After purchasing a license, you will instantly receive your license via email sent to the email address registered with PayPal! Almost all licenses are issued within less than a minute of PayPal accepting payment. If it’s not there, check your spam folder, the sender of the license email is – if you need to whitelist this email address, please do it!
  • The license is issued and sent to your email address registered with PayPal. Make sure you can receive email on that address. Check your spam box. Whitelist if needed in your spam software!
  • If one hour after the order you have not received the license, please email with your PayPal receipt and we will work on issuing a license manually – but this can take anywhere from 24h to a few days.
  • You are acquiring a time limited license to the software, NOT the traffic data! Traffic data is provided on a best effort basis and cannot be guaranteed to be up to date or available at all times!

Download for Windows (45MB) | Download Standalone for Windows (89MB) | Download for OS X (44MB) | Download Standalone for OS X (110MB) | Download for Linux (44MB)

12 month license (all platforms) USD $59.99

50% discount on monthly
6 month license (all platforms) USD $35.99

40% discount on monthly
3 month license (all platforms) USD $19.99

35% discount on monthly
1 month license (all platforms) USD $9.99

Free 1h trial license. Click here to generate a free trial license!
You can create a single 1h trial license every 90 days.

Current traffic status

The plot below updated every minute shows a red dot for every aircraft being tracked at 10’000ft or lower, and a blue dot for every aircraft higher than 10’000ft. The red dots overplot the blue dots, this is to show where there is lower flying traffic, and it also highlights to a lesser degree where the coverage could be improved. Click on the map for a larger resolution version.

And the combined coverage seen in the last 24 hours:


Windows 7/8/9/10

Simply run the setup executable, agree to the terms, and finish the install. You’ll note that both the setup and the executable are cryptographically signed so you can be sure that what you’re installing is exactly what Inside Systems Pty Ltd (the creator of RealTraffic, i.e. me) have released. RT is written in Java. That means it requires a java runtime environment (JRE) to work with the underlying hardware – it’s because of this that RT works on all three major platforms Windows, Mac, and Linux. Occasionally, the JRE’s can be too outdated on your machine, or have been poorly installed or corrupted. If that’s the case it’s not always entirely evident. If you are unable to enter your license key and you always receive a license validation error even after entering it correctly (make sure you copy paste it to avoid typing errors!), a corrupt JRE is one possible scenario. In that case, either fix the JRE by updating your local Java installation, or, to make it easy for you, just download and install the “Standalone” version, which comes bundled with the JRE.

MacOS (formerly of OS X glory)

Yes yes, it’s now called MacOS. Simply mount the dmg, drag and drop the icon into the Application folder shortcut on the dmg (or in finder, it does the same thing), and run it. Make sure you have a current version of the java runtime environment (JRE) installed. Or, just download and run the standalone version if you don’t want to clutter your system with a JRE.


Unpack the tgz, and run the built in ./ script from terminal (or double click it in your favourite file browser). You’ll need to have a current JRE installed.

Configuring it for use

Once the application has been installed and the license number entered, use “Spotter Mode” to see if you can see any traffic. Select an airport in the dropdown list (or type the first letters of the ICAO code for the airport to very quickly select the correct one, e.g. EDDF for Frankfurt). If no traffic is displayed now, go to the Fault Finding section below. In 99.999% of all cases however, you’ll now see traffic. Then select the simulator you are using from the dropdown list: PSXT, LiveTraffic, or Aerowinx PSX.

  • If you’re running PSXT (with P3D or FSX), all options will have been properly pre-configured, no further action from you is required.
  • If you’re running LiveTraffic, make sure the “Broadcast traffic to 3rd party apps” is selected. Then choose “Show GND TFC” to show ground traffic, “Show AIR TFC” to show traffic in the air, or choose the Auto button to let RT determine whether you’re in flight or not and which traffic to show. Ideally however, you disable Autoselect AIR/GND TFC and have BOTH GND and AIR TFC selected. This will show everything.
  • If you’re running Aerowinx PSX, bring up the instructor screen in PSX, select the Network/Main tab, select “The main server” and press “Start”. You should now see a “Client 1 accepted” message if RT is connected. Then, still in the instructor screen, select the Situation/Human/Traffic tab, and select “Externally controlled”

Done! Happy flying with RealTraffic!

Fault finding / debugging instructions

Firstly, please remember that RealTraffic only works natively with the PSX 747-400 flight simulator software. If you are using X-Plane, FSX or P3D, you are using a plugin someone else has written to bring traffic into your simulator. For FSX/P3D, this is Nico’s PSXT addon – and whatever problem you’re having most likely originates in that corner of the universe. Please check out his forum here if that’s the case: If you’re using X-Plane 11, you’re using Birger Hoppe’s LiveTraffic plugin. Please see his forum for support.

If you still think there is a problem with RealTraffic and it doesn’t behave as expected, follow these few simple steps to help with debugging. RealTraffic has been shown to run on thousands of computer configurations without problems. It’s been tested on Windows 7/8/10, OS X, and Linux.

  • Remove any equipment from your network that might be trying to put itself inbetween your computer and the internet. This can result in security exceptions and the connection won’t succeed, preventing RealTraffic from running. There are for example free internet deals in the US where marketing firms will sniff your internet behaviour by injecting themselves between your computer and the servers you’re retrieving data from, in return for free internet. This won’t fly, literally, with RealTraffic.
  • To see whether the server RealTraffic needs to be able to access to run is reachable, try connecting your browser to the RealTraffic status image on the same computer as RealTraffic is running on. If you can’t connect, the problem is network related. Check your internet connection and your DNS settings.
  • If the problems still persist, try downloading the “standalone” version as it includes all of the required runtime libraries and will run independently of your locally installed Java Runtime Environment (JRE).
  • Finally, make sure you have all the software bits and bobs connected. RealTraffic is completely “add-on” agnostic – it doesn’t know whom it is talking to on the server port, whether that’s PSX, PSXSeeconTraffic, X-Plane, or another third party app. Make sure they are indeed providing the data RealTraffic needs to function.
  • If issues persist, start RealTraffic in debugging mode from the command line. This can help you locate problems with your installation. On Windows, simply open a terminal/console, change into the directory the software is located in, and run the following command java -jar RealTraffic.exe debug and watch the console for debugging output. if you’re running the standalone version, use this command: java -jar "RealTraffic Standalone.exe" debug. Make sure to include that output in any support email you might send.
  • And then, as a last step, if you’re really convinced you’ve found a new bug, please contact us via email: support at

Information for developers

This brief PDF document explains how to interface RealTraffic so you can make use of traffic whichever way you would like to. Click here to download the document v.1.2.


In descent towards Paris, compare the RealTraffic screen on the right hand side with the TCAS display: at the 10’o’clock position, LDM25JV is visible, a 737-800 that’s approximately 300ft above us and in descent. EWG1182 at 1’o’clock is visible in the TCAS, as is HOP694X at about 3’o’clock.

Following are some more screenshots showing traffic as shown in RealTraffic and in the PSX cockpit. If you are seeing traffic in the RealTraffic application, but you can’t see the traffic in TCAS, make sure you have the display of traffic on your navigation display enabled by pressing the TFC button on the EFIS control panel.

Descending into Paris. The real world traffic is visible both in the TCAS as well as the RealTraffic radar display.

Descending into Paris. The real world traffic is visible both in the TCAS as well as the RealTraffic radar display.

Approaching Runway 28R at San Francisco Intl. The real world traffic is visible both in the TCAS as well as the visual view.

Approaching Runway 28R at San Francisco Intl. The real world traffic is visible both in the TCAS as well as the visual view.

Screen Shot 2015-01-24 at 15.01.09 Screen Shot 2015-01-24 at 15.01.05

Testing the system by climbing into the approaching Etihad 183 (a Boeing 777W). Watch the TCAS RA on the PFD/ND to the right.

RealTraffic_ETD183_conflict RealTraffic_PSX_ETD183_conflict

The traffic is also visible in the new Foreflight display:


Release history


  • In preparation for server side upgrades the client requires a mandatory update. Sorry for the inconvenience.
  • Emergencies window no longer opens on its own.
  • Better cache handling on the server side and some minor GUI bug fixes.
  • Dragging the map in spotter mode is now smooth and the spotter position is recalled correctly after a program restart.


  • A weekly list of emergencies is now available. Select a flight and click the “Center on this flight” button, and the time offset and spotter location will be automatically set so you can follow the emergency. Note: The list is somewhat optimistic: Many of the emergencies listed currently aren’t real but rather due to data feeders incorrectly reporting the transponder code. I’m implementing some cross checking on the server side over the weekend to reduce the number of false positives.
  • To watch a recent emergency (BEE1331 EDI-LCY, landed at Birmingham BHX), set the history slider to 2019-07-22 06:26 UTC. The emergency window will pop out and you can select and center the flight and watch it descend while orbiting several times, and land. All were safe.
  • Emergency and Search window positions are saved for the next time the windows open
  • If any emergencies are present worldwide, a window will pop up showing the details of the affected flights. As in the search window, you are able to jump to the selected flights if in spotter mode.
  • Click the “Find flights…” button to search for flights at the currently selected time. If in Spotter Mode, you can then center your view on the selected flight.


  • Better handling of connection and read timeouts when fetching traffic data.
  • It’s now possible to ignore the AIRAC out of date messages when starting RealTraffic.
  • Simulator settings changed to allow setting Ground/Air traffic for LiveTraffic.
  • the “last position” timestamp is now available in the UDP data sent on port 49003
  • Switching between spotter mode and flight simulator modes no longer requires restart of RealTraffic.
  • A much improved radar display that can now be dragged with the mouse to view traffic further away from the current zoom level. In spotter mode, the new centre position is retained after releasing the mouse button.
  • Information popup showing data about the clicked on traffic.
  • Display and calculation of correct flight altitudes for flights that are below the transition altitude of the nearest airport.
  • Removal of the injection logic, a very little used feature.
  • Tracking of flights in spotter mode: Click “Follow this aircraft” in the info popup to center the radar display on this flight and follow it until it ends.
  • Flights squawking an emergency transponder code (7700/7600/7500) are displayed in red.
  • …and last but not least: Time offset/historical data is back!

– Multiple optimisations under the hood.
– Navigraph navigation database is now fully supported and integrated.
6.0.34 (Mandatory update)
– Fixed graphics bug causing high CPU usage when traffic window collapsed.
– Minor network glitch fixed.
– First release of v6. Now featuring navigation display.
– Improved traffic source failover handling
– Fixed a bug broadcasting the wrong hex ID’s of aircraft
– Windows executable and setup are now cryptographically signed.
– Added spotter mode: Allows operation without being connected to a flight simulator.
– Improved radar display now uses circles for aircraft targets.
– Displays the current simulator true track.
– Improved display of radar labels.
– fixed nearest weather display (was missing).
– removed time offset controls when feature is unavailable.
– feature improvement: X-Plane is now supported as a position source (traffic injection is NOT (yet) supported).
– feature improvement: More simulators will be supported soon. This requires modifications to the backend, which in turn requires changes to how the clients connect. A selection can now be made on which simulator is being used.
– bug fix: Foreflight connection is now more stable (no more jerking motions)
– feature improvement: historical flight data is now available for up to 7 days in the past.
– bug fix: makes callsigns/types in upper case.
– java update: JRE 1.8_161 is now the standalone JRE.
– bug fix: deals gracefully with corrupted ini files.
– bug fix: fixed a null pointer exception when a QNH or air traffic queries timed out.
– bug fix: renewed licenses can now be entered directly when starting the software with an expired license.
– improvement: better debug information is now available when running in debug mode.
– stability improvements.
– improved license error handling.
– stability improvements.
– added console debugging output.
– allows zooming into the radar map to 0.25 NM diameter.
– fixed internal UDP socket bindings so third party apps can bind onto the same ports and network interfaces without blocking each other.

– automatically establishes connection to the PSX server
– cooperates with Nico Kaan’s PSXseeconTraffic to bring RealTraffic into FSX/P3D world
– fixed network latency issue.
– updated network traffic format.
– added ability to disable PSX traffic injection.

– a minor bug was corrected.
– the windows program and setup executables are now cryptographically signed.
– Make the individual sections collapsible.
– Always persist settings on exit.
– Fixes flipping traffic in PSX: Traffic now no longer makes sudden jerky motions in PSX.
– Provides platform specific user interfaces including installers for Windows and OSX.
– 10 minute time limit on the free demo.
– AIR/GND traffic or automatic traffic selection is now possible.
– Disable connection failure dialog box on autostarted reconnect. Now only displays when manually connecting.
– Obtain correct broadcast address for currently selected IPv4 interface
– Automatically reconnects if PSX disconnects, the network connection drops, or PSX is restarted.
– Displays ground traffic as well
– First public non-beta release.