Best Open Access Journals in 2026 (Ranked by Impact)
The best open access journals in 2026, ranked by h-index, are Nucleic Acids Research, Journal of Biological Chemistry, Nature Communications, Journal of Clinical Investigation and PLoS ONE. These journals combine free, unrestricted access with some of the highest citation impact in science.
Top open access journals by h-index
| Rank | Journal | ISSN | h-index | Publisher |
|---|---|---|---|---|
| 1 | Nucleic Acids Research | 0305-1048 | 871 | Oxford University Press |
| 2 | Journal of Biological Chemistry | 0021-9258 | 777 | Elsevier |
| 3 | Nature Communications | 2041-1723 | 726 | Nature Portfolio |
| 4 | Journal of Clinical Investigation | 0021-9738 | 708 | ASCI |
| 5 | The Astrophysical Journal | 0004-637X | 675 | IOP Publishing |
| 6 | Genes & Development | 0890-9369 | 593 | CSHL Press |
| 7 | PLoS ONE | 1932-6203 | 590 | Public Library of Science |
You can browse and filter every indexed open access journal by impact, citations and research field in the Scinovex journal directory.
What is an open access journal?
An open access (OA) journal makes its peer-reviewed articles freely available to read, download and reuse without a subscription or paywall. Readers do not pay; instead, publication is often funded by an article processing charge (APC) or by the publishing institution.
How are open access journals ranked?
Scinovex ranks journals primarily by h-index — a measure of both productivity and citation impact. A journal with an h-index of 200 has published at least 200 articles that have each been cited at least 200 times. We also show total citations, article counts and a 2-year impact indicator on every journal profile.
Are open access journals reputable?
Yes — many of the world's most cited journals are fully or partially open access, including Nature Communications and PLoS ONE. To check a journal's credibility, look for a high h-index, indexing in DOAJ, a named reputable publisher and a long, consistent publication history — all of which are shown on each Scinovex journal page.
Frequently asked questions
Which open access journal has the highest impact?
Among indexed OA journals, Nucleic Acids Research currently has the highest h-index (871), followed by the Journal of Biological Chemistry and Nature Communications.
Is PLoS ONE a good journal?
PLoS ONE is a large, well-established multidisciplinary open access journal with an h-index of 590, making it one of the most cited OA journals in the world.