I recently learned that GitHub - poliastro/poliastro: poliastro - Astrodynamics in Python can export to a CZML file. Which you can drag and drop on to Cesium Viewer to view.
https://docs.poliastro.space/en/stable/examples/CZML%20Tutorial.html
The
extractor.packets
can be saved into a file ending in .czml and that is what you would drop onto the viewer.
Previsat, also in Debian, looks quite good as well. It can use arbitrary TLEs, autoupdate from places like Celestrak and can also export tables of data.
I see the version in Debian bookworm/testing is 3.5, whereas upstream is on 5.0.
Yet another one in Debian, KDE/QT based with many projections, and can import custom and/or live TLEs is marble. It can also import KMZ.
Look4Sat is available for âmobile devicesâ at F-Droid. They specifically call out SatNOGS and gpredict in the README:
Thanks to the huge database provided by Celestrak and SatNOGS you have access to more than 5000 active satellites orbiting Earth.
Custom TLE data import is available via files with TXT or TLE extensions
From the matrix chat channel:
This is a online solution where you can track satellites. You create a dashboard, add a satellite, or use a custom TLE. You can even add your ground station and calculate future passes. It shows different plots, like 2D or 3D map or a polar plot for your ground station.
Tracksat looks cool, but I was unable to find the source code. The author has a github page, but I donât see the project there.
Indeed, I was wondering about this too. @yiea: Is tracksat free software and if yes, where can we find the source code? 
I donât know if it is free.
Hi @kerel! Tracksat is a free web application and youâre welcome to use it - https://www.tracksat.space You can visualize custom TLE by adding a âcustomâ satellite:
It is not open sourced though - weâve never decided to open it, as we are no longer actively maintaining it, so it would be hard to deal with issues/PRs reported by people. Maybe in the future when weâll have some active satellites in orbit and weâll come back to this project in our space time But of course, you can use it any time!
If you release it under a Libre license, you have no obligation to deal with issues. In fact, you could do it as sort of âabandonwareâ, which is often done, along the lines of âwe no longer have the time to maintain this software, so we are releasing it under a libre license for anyone in the community that wants to pick it upâ.
To expand with an example here: The map visualization in satnogs-db and polar plots in satnogs-network were based on a publication with no comments, just the source code + license of some website sources at github:cepr/phonesat-website. They developed a javascript-fork of gpredict. Due to the implicit GPL license of their website we were allowed to use this fork as well, and built the map & polar plots with it.
tl;dr: Please do not hesitate to publish source code under a free license. It can really help the community!
PS: And of course we published the seperated gpredict.js sources as well, so that others can build on it too.
I spent some time getting skymap to work with libre giza since pgplot is closed. It is now in a usable state. satmap and satorbit were also ported to giza.
skymap
satmap
satorbit