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

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