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GNU PSPP vs gretl: catalog facts
GNU PSPP	gretl
Free Free software under GPL-3.0-or-later, with no paid add-ons.	Free Free and open source under the GNU General Public License.
Linux, Command line	Windows, macOS, Linux
Familiar to SPSS users No limits on cases or variables and no expiring licence	Graphical interface for econometrics and time-series work Integrates with X-13ARIMA-SEATS, TRAMO/SEATS and GNU R
Does not support every SPSS feature Interface is plainer than commercial statistics packages	Focused on econometrics rather than general statistics Interface looks dated compared with commercial packages
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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