I am seaching for a software that would enable me to create a database constitued of PDF files of older ethnographies of north american indigenous peoples. Here I'm thinking of ethnographies like those produced by the Bureau of American Ethnology or by the National Museum of Man in Canada. I want to classify the ethnographies by linguistic families and to be able to seach by keywords in the text of the PDFs (most files enables keywords research nowadays). The aim of this database would be to facilitate comparative work. So, ideally, the software or the platform would allow to add another level of classification, such as a typology (X-, Y- or Z-type of conceiving a given concept). Ideally the software would also allow the database to be shared with other researchers. I know Endnote would allow this type of work, with some limits. Maybe there would be better a better way to handle this ?