Peer-Reviewed Open Access (OA) Journals / Publishers

PLOS (Public Library of Science)

A pioneer in Open Access publishing offering major journals such as PLOS ONE, PLOS Biology, and PLOS Medicine.

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Frontiers

Swiss-based fully Open Access publisher with peer-reviewed journals in science, engineering, medicine, and technology. Indexed in Scopus & Web of Science.

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MDPI

Swiss OA publisher with over 400 peer-reviewed journals (e.g., Sensors, Applied Sciences).

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Nature Communications

High-impact multidisciplinary OA journal from Nature, indexed in Web of Science.

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Scientific Reports

Large-scale OA journal covering all natural and applied sciences.

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BMC (BioMed Central)

OA publisher with journals in medicine, life sciences, and applied sciences.

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Copernicus Publications

German OA publisher specializing in earth sciences, hydrology, energy, and climate (Hydrology and Earth System Sciences, etc.).

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IWA Publishing

Some journals are fully OA (e.g., Blue-Green Systems), while others are Hybrid. Specializes in water, sanitation, and environmental engineering.

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eLife

Prestigious OA journal in life sciences and medicine with transparent peer-review practices.

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PeerJ

OA publisher in biology, medicine, chemistry, and computer science.

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SciPost

Community-driven OA platform with rigorous open peer review, focusing on physics and mathematics.

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Indexes / Platforms with OA Journals

DOAJ (Directory of Open Access Journals)

Directory of Peer-Reviewed Open Access Journals.

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ScienceOpen

Aggregates OA articles from many publishers (PLOS, Frontiers, Wiley, etc.); content depends on original publisher (some Hybrid). A research discovery platform linking millions of scholarly OA articles.

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