The Best Spider ID Alternatives in 2026

BugGuide helps identify North American insects and spiders with images and information.

QPaths offers physics and science learning pathways for amateur and experienced learners and provides a community link.

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.

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

PC Progress provides website account and information resources for visitors and general users.

Visitors can choose from interactive simulations on oPhysics to explore and learn about physics topics.

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

Interactive 4D Handbook lets visitors manipulate four-dimensional shapes and explore 4D concepts.

Visitors can use Wumbo as a math reference site for students, teachers, and enthusiasts.

The Ferns provides information about ferns and invites visitors to support the site.

Visitors can explore chemical elements in the interactive periodic table at Periodic-Table.io, which offers multiple language options.

The Online Encyclopedia of Integer Sequences lets visitors search integer sequences and contribute through its community-supported site.

Rink lets visitors run queries in a browser and view the results locally without leaving the page.

Pattern Radio uses AI to explore thousands of hours of humpback whale recordings and help visitors examine acoustic patterns.

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.

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

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