Compare software

tracker vs Gpredict: catalog facts
tracker	Gpredict
Free Free and open source under the Apache-2.0 license.	Free Free software under the GNU General Public License.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Shows satellite positions and trajectories in real time Includes a sky view and continuous world map	Real-time positions shown on maps, tables and polar plots Detailed predictions for upcoming passes
Uses a terminal interface Automatic orbital data updates use CelesTrak	Precompiled binaries come from third parties rather than the project Desktop interface only, with no mobile version
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-2.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.