With each manuscript you can add supplementaries in any format with unlimited storage. Just click, and drag and drop or select files into each project. You also can integrate from other services like Figshare, Dropbox, or GitHub. See here for example https://osf.io/nuhqx/.
By submitting your work through us to any of our partner repository services African scientists of any discipline can present their research findings and connect with other researchers on the African continent and globally free of charge. All our partner repositories assign a DOI (digital object identifier) and an open scholarly license (usually CC-BY 4.0) to your work ensuring discoverability in research databases through the Crossref indexing service.