The Best Audubon Alternatives in 2026

Hot Nozzle Society shares information about its rocketry community and a July gathering.

SatModeler provides information about satellite modeling, although the fetched page contains little substantive detail; needs review.

Bird Sounds presents a collection of bird recordings, with sounds credited to the Macaulay Library and collaborators.

This Android app recognizes bird species from their sounds and includes an extensive database of bird recordings.

The National Association of Rocketry provides information and resources for hobby rocket enthusiasts.

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

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

OneConverter provides conversion tools for work and study, with searchable pages for its available converters.

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.

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.

Outerzone lets visitors search and browse plans for model aircraft, including its catalog of more than 16,000 plans.

Sectional Anatomy presents CT and MRI sectional anatomy resources for body regions including chest, abdomen, head, and wrist.