During the pandemic I was confronted with the challenge of providing statistics software to students who had a wide range of hardware and software. Using statistics software installed on computers in the lab just wasn't an option for everyone. My solution was to code some web-based statistics calculators for basic introductory statistics needs: Descriptive statistics, t-tests, etc. These will work well even for extreme situations: on smartphones and for people who have weak internet connections.
My web-based statistics tools for introductory statistics classes have just been updated. Z-tests, t-tests, ANOVA, and chi-squared can now provide exact p values.
These aren't really intended to replace SPSS, R, JASP, and other professional-grade statistics software. Possible uses are classroom demonstrations or online instruction. There are also some practice pages that will give students data to work with, then provide an answer when students are ready.
These resources are educator friendly. There are no ads, unlike some horrible online calculators. CC licensing allows for free sharing and use, making these an open education resource (OER).
https://garyfisk.com/stats/index.html
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