JASP vs jamovi
Last verified · repository stats fetched 19 Oct 2026
JASP and jamovi are free, open-source (AGPL-3.0) statistics programs with SPSS-style menus and results that update as you change options. Both open SPSS .sav files directly. They differ in emphasis: JASP offers its standard analyses in both classical and Bayesian form, while jamovi leans on R, showing the R code behind each analysis and adding methods through a community module library.
| JASP | jamovi | |
|---|---|---|
| Licence | AGPL-3.0 Open source (copyleft) | AGPL-3.0 Open source (copyleft) |
| Source code | GitHub | GitHub |
| ★ Stars | 1k 1,009 | 790 790 |
| Last commit | 17 Oct 2026 | 19 Oct 2026 |
| Runs on | Windows, macOS, Linux | Windows, macOS, Linux, Web |
| Opens | .csv, .tsv, .txt, .sav, .zsav, .por, .sas7bdat, .sas7bcat, .xpt, .ods, .xls, .xlsx, .dta, .rdata, .rds, .mwx, .mpx | .sav, .sas7bdat, .dta, .csv, .xlsx, .rds Opened directly, per jamovi's features page. |
| Your data | Stays on your computer JASP's FAQ: “JASP will never collect any user-identifiable information.” On Windows its analysis engine runs in a sandbox with no network access by default. | Not documented |
| Stand-out feature | Bayesian versions of standard tests | R code view, Rj editor and module library |
| Free alternative to | SPSS, GraphPad Prism | SPSS, Stata, SAS |
Key differences
- JASP offers standard analyses in both their classical (frequentist) and Bayesian form. (jasp-stats.org)
- jamovi's syntax mode shows the exact R code behind each analysis, its Rj editor runs R inside jamovi, and its analyses are published on CRAN as the jmv package. (jamovi.org/features.html)
- jamovi adds analyses such as mixed models and meta-analysis from its community module library, and anyone can publish a module written in R. (jamovi.org/features.html)
- jamovi saves data, analyses, options and results together in one .omv file. (jamovi.org/features.html)
- JASP integrates with the Open Science Framework (OSF) and copies tables and graphs into Word in APA format. (jasp-stats.org)
- JASP's FAQ lists more import formats, including SAS transport, ODS and Minitab files; jamovi lists SPSS, SAS, Stata, CSV, Excel and R .rds. (jasp-stats.org/faq · jamovi.org/features.html)
Which should you pick?
- JASP: Pick JASP if you want Bayesian versions of everyday tests next to the classical ones, publish via OSF, or need to open a wider range of file types.
- jamovi: Pick jamovi if you want to see or reuse the R code behind your results, need extra methods from its module library, or like keeping data and results in a single file.
This verdict is based on the documented facts above, not on hands-on testing.
Moving your data
Coming from SPSS? Both programs open .sav files directly, so you can bring your data across without exporting it first. Re-run your analyses in the new program and check the results against your SPSS output.
Sources: jasp-stats.org/faq · jamovi.org/features.html.
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Other comparisons
Sources: jasp-stats.org · jamovi.org/features.html · jasp-stats.org/faq. Stars and last-commit dates come from each project's public repository. “Not available” or “Not documented” means we found no official source for it, not that the feature is missing.