1
Accessibility Cheatsheet
moritzglantz.de/accessibility-cheatsheetAlso covers accessibility and technology
Apply practical universal design approaches, including semantic HTML, to make websites and apps accessible.
Alternatives
The Best A11Project Alternatives in 2026
24 alternatives2 free · 3 open source
Looking for something like A11Project? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 3 are open source.
About A11Projecta11yproject.com/checklist
VisitUse The A11Y Project checklist as a beginner’s guide to digital accessibility and web content requirements.
Top picks at a glance
First suggestionAccessibility CheatsheetApply practical universal design approaches, including…Free or freemium optionMathNetMathNet lets users browse and search more than 30,000…Open source optionCSS ProtipsImprove CSS code with this collection of tips covering…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Accessibility Cheatsheet | — | Not stated | Web |
| 2 | CSS Protips | — | Yes | — |
| 3 | WhichJDK | — | Not stated | Web |
| 4 | RCPlanes Online | — | Not stated | Web |
| 5 | Performance Checklist | — | Yes | — |
| 6 | Generative AI For Beginners | — | Yes | — |
| 7 | MathNet | Free | Not stated | Web |
| 8 | Calgary Guide | — | Not stated | Web |
| 9 | HDLBits | — | Not stated | Web |
| 10 | Corca | — | Not stated | Web |
All A11Project alternatives
2
Also covers accessibility and technology · open source
Improve CSS code with this collection of tips covering practices for writing stylesheets.
3
WhichJDK
whichjdk.comAlso covers technology · same kind of website
Compare JDK releases and requirements for building and running Java applications using this reference.
4
RCPlanes Online
rcplanes.onlineAlso covers technology · same kind of website
RCPlanes Online offers a beginner's guide to basic aerodynamics and information for radio-controlled aircraft hobbyists.
5
Also covers technology · open source
Review frontend performance practices with this checklist for optimizing web page speed.
6
Also covers technology · open source
Microsoft’s Generative AI for Beginners provides 21 lessons to help learners start building with generative AI.
7
Also covers technology · same kind of website · free
MathNet lets users browse and search more than 30,000 Olympiad-level problems from 47 countries in 17 languages.
8
Calgary Guide
calgaryguide.ucalgary.caAlso covers technology · same kind of website
The Calgary Guide provides medical education content and resources for collaborative contributions.
9
HDLBits
hdlbits.01xz.netAlso covers technology · same kind of website
HDLBits provides Verilog practice exercises for learning hardware description and digital logic.
10
Corca
corca.appAlso covers technology · same kind of website
Corca supports collaborative work with mathematical notation and content in a shared editor.
11
UC San Diego CG
meded.ucsd.edu/clinicalmed/introduction.htmlAlso covers technology · same kind of website
The UC San Diego Practical Guide to Clinical Medicine presents a guide to clinical medicine.
12
Subtitling Guide
baechusquad.download/guideAlso covers technology · same kind of website
This guide helps aspiring subtitlers improve their skills and points to subtitling resources.
13
VSCodium Guide
rentry.co/vscodiumguideAlso covers technology · same kind of website
Follow this guide to configure VSCodium to use the Microsoft Extension Marketplace instead of Open VSX.
14
Fine Tuning Guide
docs.unsloth.ai/get-started/fine-tuning-guideAlso covers technology · same kind of website
This Unsloth guide introduces the basics and best practices of fine-tuning language models.
15
University of Minnesota Histology
histologyguide.org/index.htmlAlso covers technology · same kind of website
The University of Minnesota Histology Guide teaches recognition of tissues through visual histology resources.
16
Text Mining with R by Julia Silge and David Robinson
tidytextmining.comAlso covers technology · same kind of website
A guide to text analysis within the tidy data framework, using the tidytext package and other tidy tools.
17
How to Become a Data Scientist
mastersindatascience.org/careers/data-scientistAlso covers technology · same kind of website
This guide explains data science careers, including common degrees and skills.
18
Lab Safety Guide / Intro
labmode.co.ukAlso covers technology · same kind of website
Lab Safety Guide introduces laboratory safety equipment and guidance for lab environments.
19
EMRap
emrap.org/hdAlso covers technology · same kind of website
EMRap provides medical education resources including courses, procedures, imaging, and videos.
20
FlowingData
flowingdata.comAlso covers technology · same kind of website
FlowingData publishes articles, projects, and learning resources about data visualization and statistics.
21
Also covers technology · same kind of website · free
Passmedicine offers online revision for the 2026 UCAT, with resources for exam preparation.
22
Wiki
wiki.openrocket.infoAlso covers technology · same kind of website
The OpenRocket wiki provides collaboratively written documentation for the open-source model rocket simulator.
23
ThrustCurve
thrustcurve.orgAlso covers technology · same kind of website
ThrustCurve provides model and high-power hobby rocket motor data, including manufacturer specifications and certified performance.
24
Data Science Course By IBM
skillsbuild.org/students/course-catalog/data-s…Also covers technology · same kind of website
IBM SkillsBuild provides free AI and technology teaching resources, including lesson plans, educator training, and toolkits.
No alternatives match this filter.
Alternatives to similar tools
MathNet24 alternativesPerformance Checklist24 alternativesPassmedicine24 alternativesEMRap24 alternativesWiki24 alternativesThrustCurve24 alternatives
What is the best alternative to A11Project?
Based on features, tags and platforms, the closest alternatives to A11Project are Accessibility Cheatsheet, CSS Protips, and WhichJDK.
Is there a free alternative to A11Project?
Yes. MathNet and Passmedicine are free or offer a free plan.
Are there open-source alternatives to A11Project?
Yes: CSS Protips, Performance Checklist, and Generative AI For Beginners.
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