The Best Jacobs Rocketry Alternatives in 2026

V2Rocket provides experimental rocketry updates and a way for visitors to send comments and questions.

Richard Nakka's Experimental Rocketry site shares updates and technical resources about experimental rocketry.

Half Cat Rocketry shares open-source liquid rocket motor information and resources for amateur rocketry.

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

John Coker shares information about model and high-power rocketry through his rocketry site.

Ye Olde Rocket Forum hosts discussions and recent activity about rocketry.

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

Tripoli Rocketry shares information about rocketry and activities in its community.

openMotor simulates internal rocket motor ballistics, estimating chamber pressure and thrust from propellant, grain geometry, and nozzle details.

RocketPy describes itself as a six-degree-of-freedom trajectory simulator for high-power rocketry.

OpenRocket provides aerodynamics and trajectory simulation software for model rocketry.

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

Datasheet4U searches datasheets for more than 900,000 electronic components, with specifications and PDF documents.

This project documents an amateur-built liquid-fueled rocket engine and flight vehicle, including engine project pages.

My Balsa & Glass Workshop documents scratch-built balsa radio-controlled models and workshop projects.

RecentlyExtinctSpecies documents recently extinct, missing, and other species in an online database.

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.