Science, Math & Technology

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

Read a guide to Apple Silicon chips, devices, operating systems, tools, and software.

Review frontend performance practices with this checklist for optimizing web page speed.

OpenFOAM is a free, open-source computational fluid dynamics software package maintained by the OpenFOAM Foundation.

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

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

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

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

A curated GitHub list gathers resources related to mechanical engineering.

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.

Follow a 100-day sequence of machine-learning coding exercises in this repository.

A curated GitHub list gathers bioinformatics libraries and software for browsing and discovery.

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

A curated GitHub list collects aerospace engineering learning resources and related projects.

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

Open Source Guides offers resources for people and organizations learning to run or contribute to open-source projects.

This interactive visualization teaches how transformer language models work.

A computer vision learning platform with interactive online code, an ebook, source code, and a reader community.

This article outlines patterns for building LLM systems, covering evaluation, retrieval augmented generation, fine tuning, caching, and guardrails.

Apply clean code concepts to PHP projects using this collection of guidance and examples.

Follow Airbnb’s JavaScript Style Guide for conventions when writing and reviewing JavaScript code.

Learn regular expressions through the examples and explanations in this repository.

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