This report outlines existing quality evaluation criteria, best practices, and assessment systems for IPSPs developed by international associations, RPOs, governments, and international databases. It also analyses academic literature on research evaluation of IPSPs, assessment criteria and indicators. The analysis matrix includes the following categories, which will also be the core components of EQSIP: Funding: description of the funding model, OA business model, transparency in listing all funding sources, etc. Ownership and governance: legal ownership, mission, and governance. Open science practices: OA policy, copyright and licensing, open peer review, data availability, new approaches to research assessment, etc. Editorial quality, editorial management, and research integrity. Technical service efficiency: technical strength, interoperability - metadata, ISSN, PIDs, machine readability, and accessible journal website. Visibility, including indexation, communication, marketing and impact. Equity, Diversity and Inclusion (EDI): multilingualism, gender equity. A self-assessment checklist for IPSPs summarises the best practices outlined in the report. The full list of the analysed documents and the extracted data are provided as a dataset: https://doi.org/10.5281/zenodo.7859247 

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