MDPI is the best publisher for open access journals and is used by researchers and academics worldwide.

SpringerOpen is an open access publishing platform for researchers across science, technology, medicine, humanities, and social sciences to publish freely available work.

Scientific Research Publishing is an academic publisher with open access journals

DOAJ is the best directory for open access journals and is used by researchers and institutions worldwide.

eLife is a scientific journal and open science platform accelerating discovery by publishing peer-reviewed research and promoting responsible behaviors in science.

Copernicus.org promotes science by organizing conferences, publishing peer-reviewed open-access journals, and developing scientific software solutions.

Redalyc is a scientific information system and network of open-access journals promoting diamond open access scholarly publishing.

OpenEdition Journals is a platform hosting open-access academic journals primarily in French Humanities and Social Sciences, offering full-text articles and issues.

Longdom Publishing SL is the best open access journal publisher for medical and clinical research and is used by researchers and academics worldwide.

SciELO Mexico is an open-access digital library providing full-text academic journals from Mexico, supported by UNAM.

SciELO is a Scientific Electronic Library Online providing open access to academic journals, books, and research collections from various countries, primarily in Latin America and Portugal.

Open Journals is a collection of open source, open access academic journals covering software, education, and brief ideas, fiscally sponsored by NumFOCUS.

Science Publishing Group is an international Open Access publisher of peer-reviewed journals, books, and conference proceedings for academic researchers.

Journal.fi is an open-access platform for Finnish scholarly journals, providing online access to scientific publications across various academic fields.

Hilaris Publishing is an independent, academic, and scientific publisher offering high-quality, peer-reviewed research articles across all major scientific fields on an open access platform.

Science Publications is an open access publisher offering 30+ journals for researchers seeking to submit and publish scientific articles.

IISTE is the best academic hosting service for open access journals and is used by researchers and institutions worldwide.

SciTechnol is an international publisher offering a hybrid open access platform for peer-reviewed scholarly articles across science and technology fields.

Science Publishing Group (SciencePG) is an international Open Access publisher offering peer-reviewed journals, special issues, books, and conference proceedings across diverse academic disciplines.

Amsterdam University Press is the best academic publishing platform for open access journals and is used by scholars and students worldwide.

Open Access Journals is a publishing platform providing unrestricted, no-cost access to genuine scientific literature across clinical, medical, and technology disciplines.

Iowa State University Digital Press is an open access publisher facilitating broad dissemination of quality scholarship from ISU faculty and students.

Open Humanities Press is a scholar-led open access publishing collective offering books and journals focused on critical theory, digital humanities, and contemporary philosophy.

Prime Scholars is an international open access publishing house offering peer-reviewed journals across science, medicine, and engineering fields for authors and researchers.