1
BatteryUniversity
batteryuniversity.com/articlesAlso covers educational and technology · same kind of website
Battery University offers educational information about battery mechanics and basic battery concepts.
Alternatives
The Best OpenIntro Alternatives in 2026
24 alternatives1 free · 0 open source
Looking for something like OpenIntro? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan.
OpenIntro creates educational materials designed to make learning more accessible.
Top picks at a glance
First suggestionBatteryUniversityBattery University offers educational information about…Free or freemium optionAoPS AlcumusThe AoPS Alcumus system provides free online mathematics…Another optionEmergency Medicine CasesEmergency Medicine Cases publishes free online medical…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | BatteryUniversity | — | Not stated | Web |
| 2 | Emergency Medicine Cases | — | Not stated | Web |
| 3 | VittaScience | — | Not stated | Web |
| 4 | EMCrit | — | Not stated | Web |
| 5 | LabXchange | — | Not stated | Web |
| 6 | NAR | — | Not stated | Web |
| 7 | fast.ai | — | Not stated | Web |
| 8 | JavaScript for Data Science | — | Not stated | Web |
| 9 | Practical Deep Learning | — | Not stated | Web |
| 10 | LibreTexts Engineering | — | Not stated | Web |
All OpenIntro alternatives
2
Emergency Medicine Cases
emergencymedicinecases.comAlso covers education and technology · same kind of website
Emergency Medicine Cases publishes free online medical education cases and clinical learning resources.
3
VittaScience
en.vittascience.com/codeAlso covers education and technology · same kind of website
Vittascience offers an online coding environment for learning with Arduino, micro:bit, STM32 and other hardware platforms.
4
EMCrit
emcrit.orgAlso covers education and technology · same kind of website
EMCrit provides emergency department critical care and resuscitation education through a blog and podcast.
5
LabXchange
labxchange.orgAlso covers education and technology · same kind of website
LabXchange offers science education online through a free platform developed at Harvard University.
6
NAR
nar.orgAlso covers education and technology · same kind of website
The National Association of Rocketry provides information and resources for hobby rocket enthusiasts.
7
fast.ai
fast.aiAlso covers technology · same kind of website
fast.ai shares lessons and resources focused on making deep learning more accessible to learners.
8
JavaScript for Data Science
third-bit.com/js4dsAlso covers technology · same kind of website
JavaScript for Data Science presents educational material about data science topics.
9
Practical Deep Learning
course.fast.aiAlso covers technology
Practical Deep Learning for Coders is a free course on applying deep learning and machine learning, designed for people with coding experience.
10
LibreTexts Engineering
eng.libretexts.org/BookshelvesAlso covers technology · same kind of website
LibreTexts Engineering collects curated texts that can be used directly or remixed into customized learning materials.
11
The Borr Project
borr.dev/mathAlso covers technology · same kind of website
The Borr Project provides pre-college mathematics resources and learning materials.
12
Also covers technology · same kind of website · free
The AoPS Alcumus system provides free online mathematics learning materials from Art of Problem Solving.
13
Radiology Assistant
radiologyassistant.nlAlso covers technology · same kind of website
The Radiology Assistant provides educational resources and explanations for radiology.
14
Accessibility Cheatsheet
moritzglantz.de/accessibility-cheatsheetAlso covers technology
Apply practical universal design approaches, including semantic HTML, to make websites and apps accessible.
15
Photographic Periodic Table
periodictable.comAlso covers technology · same kind of website
The Photographic Periodic Table presents element information alongside photographs and reference material.
16
DataScientistJourney
datascientistjourney.wordpress.com/category/da…Also covers technology · same kind of website
The Open Source Data Science Masters site shares reflections and materials from a six-month data science study program.
17
SmartCockpit
smartcockpit.comAlso covers technology · same kind of website
The SmartCockpit site provides an online aviation library with quizzes, news, and reference material.
18
Material Properties
material-properties.orgAlso covers technology · same kind of website
Material Properties helps the public explore information about the properties of materials.
19
ProofWiki
proofwiki.orgAlso covers technology · same kind of website
ProofWiki collects mathematical proofs and reference material in an online wiki.
20
AerospaceWeb
aerospaceweb.orgAlso covers technology · same kind of website
AerospaceWeb publishes reference material on aviation, space, design and engineering.
21
Evan Chen
web.evanchen.ccAlso covers technology · same kind of website
Evan Chen's site shares course notes, olympiad materials, teaching resources, and a blog.
22
MSD Manuals
msdmanuals.comAlso covers technology · same kind of website
MSD Manuals provide medical reference material in multiple versions for different audiences.
23
Open Logic Project
openlogicproject.orgAlso covers technology · same kind of website
The Open Logic Project collects teaching materials and resources about logic.
24
LAMMPS
lammps.orgAlso covers technology · same kind of website
The LAMMPS software simulates classical molecular dynamics, with a focus on materials modeling.
No alternatives match this filter.
Alternatives to similar tools
DataScientistJourney24 alternativesAerospaceWeb24 alternativesOpen Logic Project24 alternativesEmergency Medicine Cases24 alternativesfast.ai24 alternativesLibreTexts Engineering24 alternatives
What is the best alternative to OpenIntro?
Based on features, tags and platforms, the closest alternatives to OpenIntro are BatteryUniversity, Emergency Medicine Cases, and VittaScience.
Is there a free alternative to OpenIntro?
Yes. AoPS Alcumus is free or offer a free plan.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative