Educypedia — 29,000+ hand-picked educational links, all in one place.
A free, ad-light directory built by educators, for educators and self-learners. Browse 898 topic pages covering electronics, computing, physical and life sciences, history, and human studies. Every link is reviewed for content, every page is free for personal and classroom use, and the archive is refreshed every month so dead links get fixed and new resources keep landing on the topics you care about.
Components, circuits, RF and antennas, sensors, motors, audio, power, communications — from first principles to advanced design.
Most popular · ~280 pagesHardware, networking, operating systems, programming languages, web technologies, multimedia, and software tools.
~220 pagesPhysics, biology, chemistry, astronomy, geology, mathematics, energy — with experiments, animations, and interactive material.
~250 pagesAncient civilizations, the World Wars, archaeology, and timelines — from prehistory to the modern era.
~50 pagesGeography, languages, religion, philosophy, the environment, climate, medicine, and world data.
~50 pagesDictionaries, encyclopedias, image and animation libraries, translators, biographies, and educational portals.
~50 pagesFull-text search inside 5,000+ books across 30+ topics — from physics and electronics to medicine, finance, and engineering.
Educypedia is an information resource about scientific and educational material: electronics, engineering, science, history, and information technology. Every external link in the central part of each topic page is tested with respect to content. There are no commercial links and the site is free for personal and classroom use.
Originally launched in 2005, Educypedia is one of the longest-running curated educational link directories on the open web. Every month the entire archive gets a fresh review: dead links are replaced with archived copies so you never hit a 404, new high-quality resources are added to the topics that matter, and outdated material gets retired. The result is a directory that actually keeps working — unlike most link collections from 2005.