The Best OneConverter Alternatives in 2026

The Merck Index provides a searchable reference for chemical substances by name or CAS Registry Number.

Converter Pro converts units and includes options to hide and reorder units in its latest version.

The Open Source Data Science Masters site shares reflections and materials from a six-month data science study program.

Study algorithms implemented in C++ through this open-source learning repository.

Animated Engines uses animations to show how several types of engines work.

The National Audubon Society works to protect birds and the habitats they need.

This book explains how to build and manage a successful organization for data science work.

OCEARCH shares shark research and information about its ocean science work.

Corca supports collaborative work with mathematical notation and content in a shared editor.

EngineersEdge provides reference data and practical tools for engineers working across technical disciplines.

Google’s student page offers AI training and tools for studying, writing, and career preparation, including Gemini learning resources.

Siah’s research blog includes writing on data science principles and the experience of PhD study.

The Hugging Face Diffusion Models Course provides course materials for studying diffusion theory and image generation.

This interactive visualization teaches how transformer language models work.

MathNet lets users browse and search more than 30,000 Olympiad-level problems from 47 countries in 17 languages.

EMRap provides medical education resources including courses, procedures, imaging, and videos.

FlowingData publishes articles, projects, and learning resources about data visualization and statistics.

Passmedicine offers online revision for the 2026 UCAT, with resources for exam preparation.

The OpenRocket wiki provides collaboratively written documentation for the open-source model rocket simulator.

ThrustCurve provides model and high-power hobby rocket motor data, including manufacturer specifications and certified performance.

IBM SkillsBuild provides free AI and technology teaching resources, including lesson plans, educator training, and toolkits.

OneZoom lets visitors browse an interactive tree of life, with suggested starting points for groups of organisms.

The Wikispecies project lets visitors browse and contribute information about species through its online reference pages.

Periodic Table App lets users search chemical elements and view properties in an interactive periodic table.