Directory Of Open Access Journals
DOAJ is a comprehensive index of open access journals from across the globe, curated by a dedicated community to ensure high-quality, freely accessible academic content for all users.
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VAT EU
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Ranking score
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Koply - E-Commerce Search Engine
Koply is a site search solution for European e-commerce stores, offering instant typo-tolerant results, AI-powered synonym suggestions, and zero-results recovery. Hosted in Sweden with fixed monthly pricing and full GDPR compliance — no per-search billing.
noodle.helena.bio
Noodle is Helena Bioinformatics' free biomedical literature discovery platform for researchers, clinicians reviewing literature, and research software developers. It supports topic and identifier search, PMID, DOI and PMCID record inspection, related-paper discovery, and bounded citation or semantic literature graph exploration. Its public read-only MCP server lets compatible AI agents search and traverse source-linked biomedical literature without authentication. Semantic similarity and graph proximity are discovery signals, not proof of causality or clinical recommendations.
Igdb
IGDB is a comprehensive video game database covering detailed info on games, developers, and publishers. It serves both casual gamers and industry professionals, offering a free API and crowdsourced data.
Radio Browser
A Wikipedia-style community platform for discovering and cataloguing internet radio and TV stations worldwide. Users can browse, search, and contribute to a growing open database of streaming stations across multiple platforms.