Similar items by topic, tags, and provider (metadata-only).
datasetnandumps.wikimedia.org
dumps.wikimedia.org
Strong encyclopedic backbone for general knowledge and factual style.
resourceBuildZenodo
Zenodo
Repository for datasets, software, and other research outputs with persistent identifiers and open sharing workflows.
resourceAdvancedOpenAlex / arXiv
OpenAlex / arXiv
Use OpenAlex for metadata and citation graph work and arXiv for current papers and technical preprints.
resourceFoundationCORE
CORE
Open research discovery service for finding open access papers and repository content.
datasetnangutenberg.org
gutenberg.org
Large library of classic books and long-form prose.
datasetnandocs.openalex.org
docs.openalex.org
CC0 research graph with snapshot updates; ideal for research retrieval and paper routing.
datasetnaninfo.arxiv.org
info.arxiv.org
Open bulk access for research papers across math, physics, CS, etc.
videoFoundationMIT CSAIL
MIT CSAIL
Teaches shell, editors, version control, automation, debugging, and remote tooling that every contributor needs.
docsFoundationUNESCO
UNESCO
Global policy and resource entry point for open educational resources and open learning practice.
resourceFoundationDOAJ
DOAJ
Curated index of open access journals that helps users find quality open scholarship across domains.
courseZeroOpenStax
OpenStax
Peer-reviewed, openly licensed textbooks spanning math, science, social science, and more.
courseZeroMIT
MIT
Best structured on-ramp when you want a real class before jumping into specialist material.