The Best Wikispecies Alternatives in 2026

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

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

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

The Catalogue of Life provides a reference list of the world's species.

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

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

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

Manager uses BOINC volunteer computing to let participants contribute computing resources to projects.

The Marine Biodiversity Portal of Bangladesh provides information about marine species and ecosystems in the country.

Map of Life lets users explore species data and information about its biodiversity platform.

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

Explore the Animalia online encyclopedia for information about familiar animal species and ones that may be less well known.

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.

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

Spider ID helps visitors identify spiders and provides information for novices and experienced users.

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

The Photographic Periodic Table presents element information alongside photographs and reference material.

The SmartCockpit site provides an online aviation library with quizzes, news, and reference material.

Compare JDK releases and requirements for building and running Java applications using this reference.

ProofWiki collects mathematical proofs and reference material in an online wiki.

EyeWiki offers an eye encyclopedia written by physicians and surgeons, with reference information for readers.