PsychoPy
Surveys & experimentsBuild behavioural experiments with a GUI or Python
- Stars
- ★ 2.1k
- Licence
- GPL-3.0
- Updated
Alternative to E-Prime
Free alternatives to E-Prime
Last updated · 3 options
Quick answer: PsychoPy has the most stars on its repository of the 3 options here (★ 2.1k), followed by jsPsych (★ 1.2k). Stars show popularity, not fit, so check formats, platforms and licence for your own work.
Psychology experiment builder. Here are 3 free options, most-starred first.
What E-Prime costs
- Annual single-user cloud licence$495
- Perpetual single-user cloud licence$995
From the vendor's own pricing page (pstnet.com), checked 19 Oct 2026. Prices change and may exclude tax, so check before you decide.
jsPsych
Surveys & experimentsJavaScript library for running experiments in the browser
- Stars
- ★ 1.2k
- Licence
- MIT
- Updated
Alternative to E-Prime
OpenSesame
Surveys & experimentsGraphical experiment builder for the social sciences
- Stars
- ★ 281
- Licence
- GPL-3.0
- Updated
Alternative to E-Prime
No tools match these filters. Suggest one.
Format and fit filters only use details we found in each project's own documentation. A tool that isn't shown may still support it.
FAQ
Is there a free alternative to E-Prime?
Yes. ResearchAlts lists 3 options: PsychoPy, jsPsych and OpenSesame.
How much does E-Prime cost?
Annual single-user cloud licence: $495; Perpetual single-user cloud licence: $995. These are the vendor's published prices, checked 19 Oct 2026 on pstnet.com.
Which E-Prime alternatives are open source?
PsychoPy (GPL-3.0), jsPsych (MIT) and OpenSesame (GPL-3.0).
Which E-Prime alternatives run on a Mac?
PsychoPy and OpenSesame. The other listed here isn't listed for macOS.
Related categories: Surveys & experiments
Free tools are not always drop-in replacements. Check that a tool supports the file formats, tests and methods your supervisor, journal or ethics board expects before switching mid-project.