1
Merck Index
merckindex.rsc.orgAlso covers technology · same kind of website
The Merck Index provides a searchable reference for chemical substances by name or CAS Registry Number.
Alternatives
The Best Coolmath Games Alternatives in 2026
24 alternatives4 free · 2 open source
Looking for something like Coolmath Games? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 4 are free or have a free plan and 2 are open source.
About Coolmath Gamescoolmathgames.com/1-number-games
VisitCoolmath Games offers number games for practicing arithmetic, fractions and multiplication online.
Top picks at a glance
First suggestionMerck IndexThe Merck Index provides a searchable reference for…Free or freemium optionMathNetMathNet lets users browse and search more than 30,000…Open source optionPerformance ChecklistReview frontend performance practices with this checklist…Another optionFine Tuning GuideThis Unsloth guide introduces the basics and best practices…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Merck Index | — | Not stated | Web |
| 2 | Fine Tuning Guide | — | Not stated | Web |
| 3 | Apple | — | Not stated | Web |
| 4 | Geeky Medics | — | Not stated | Android, iOS, Web |
| 5 | KDE | — | Not stated | Web |
| 6 | Performance Checklist | — | Yes | — |
| 7 | CSS Protips | — | Yes | — |
| 8 | MathNet | Free | Not stated | Web |
| 9 | Math is Fun | — | Not stated | Web |
| 10 | Red Blob Games | — | Not stated | Web |
All Coolmath Games alternatives
2
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.
3
Apple
developer.apple.com/design/human-interface-gui…Also covers technology · same kind of website
Apple Human Interface Guidelines provides design guidance and best practices for experiences across Apple platforms.
4
Geeky Medics
geekymedics.comAlso covers technology · same kind of website
Geeky Medics offers free revision resources and OSCE guides for practicing clinical skills.
5
KDE
develop.kde.org/higAlso covers technology
Read KDE Human Interface Guidelines, with sections on design, formatting, and documentation practices.
6
Also covers technology · open source
Review frontend performance practices with this checklist for optimizing web page speed.
7
Also covers technology · open source
Improve CSS code with this collection of tips covering practices for writing stylesheets.
8
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.
9
Math is Fun
mathsisfun.comAlso covers game and technology · same kind of website
Math is Fun publishes math lessons, puzzles, games, worksheets and an illustrated dictionary for children, teachers and parents.
10
Red Blob Games
redblobgames.comAlso covers game and technology · same kind of website
Red Blob Games publishes interactive tutorials and visual explanations of mathematics and algorithms.
11
Benchmarks Game
benchmarksgame-team.pages.debian.net/benchmark…Also covers game and technology · same kind of website
Compare measured performance across programming language implementations in the Benchmarks Game.
12
EMRap
emrap.org/hdAlso covers technology · same kind of website
EMRap provides medical education resources including courses, procedures, imaging, and videos.
13
FlowingData
flowingdata.comAlso covers technology · same kind of website
FlowingData publishes articles, projects, and learning resources about data visualization and statistics.
14
Also covers technology · same kind of website · free
Passmedicine offers online revision for the 2026 UCAT, with resources for exam preparation.
15
Wiki
wiki.openrocket.infoAlso covers technology · same kind of website
The OpenRocket wiki provides collaboratively written documentation for the open-source model rocket simulator.
16
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.
17
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.
18
OneZoom
onezoom.orgAlso covers technology · same kind of website
OneZoom lets visitors browse an interactive tree of life, with suggested starting points for groups of organisms.
19
Wikispecies
species.wikimedia.orgAlso covers technology · same kind of website
The Wikispecies project lets visitors browse and contribute information about species through its online reference pages.
20
Periodic Table App
periodictableapp.comAlso covers technology · same kind of website
Periodic Table App lets users search chemical elements and view properties in an interactive periodic table.
21
Also covers technology · same kind of website · free
Outerzone lets visitors search and browse plans for model aircraft, including its catalog of more than 16,000 plans.
22
Also covers technology · same kind of website · free
Sectional Anatomy presents CT and MRI sectional anatomy resources for body regions including chest, abdomen, head, and wrist.
23
PC Progress
pc-progress.comAlso covers technology · same kind of website
PC Progress provides website account and information resources for visitors and general users.
24
Marine Biodiversity
marinebiodiversity.org.bdAlso covers technology · same kind of website
The Marine Biodiversity Portal of Bangladesh provides information about marine species and ecosystems in the country.
No alternatives match this filter.
Alternatives to similar tools
MathNet24 alternativesPerformance Checklist24 alternativesPassmedicine24 alternativesOneZoom24 alternativesEMRap24 alternativesWiki24 alternatives
What is the best alternative to Coolmath Games?
Based on features, tags and platforms, the closest alternatives to Coolmath Games are Merck Index, Fine Tuning Guide, and Apple.
Is there a free alternative to Coolmath Games?
Yes. MathNet, Passmedicine, and Outerzone are free or offer a free plan.
Are there open-source alternatives to Coolmath Games?
Yes: Performance Checklist and CSS Protips.
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