Free APC Journals is an online directory helping researchers find peer-reviewed, fully open access journals that charge authors no article processing fee. It lists 14,590 journals from 7,920 publishers across 518 subject areas, 132 countries and 87 publishing languages. The service is free to use and does not require an account.

Users can search by journal title, keyword or ISSN, or browse and filter listings by subject, indexing database, publisher, country, language and licence. Journal profiles provide practical details to support informed choices, including other possible fees, peer-review policies, indexing coverage, licence and copyright terms, long-term preservation, DOI availability and average publication times. A transparency score reflects how completely a journal documents its policies; it is not an impact metric.

The directory emphasizes that free-to-publish does not mean low quality. It presents journals with documented peer review, open licences and clearly stated charges, while noting that their costs may be supported by universities, scholarly societies, ministries or library consortia.