Journal of Applied Ecology (‘Virtual Issues’ only)
Fontanus : from the collections of McGill University (annual scholarly journal from McGill librarians, on the special collections there)
Folia Malacologica (snails)
Malacologica Bohemoslovaca (snails in Eastern Europe)
Tentacle (snail conservation)
Mollusc World (Two year paywall, Conchological Society of Great Britain and Ireland)
Boletim do Museu Municipal do Funchal (Island of Madeira and vicinity)
Bocagiana (Island of Madeira and vicinity)
Acta Horti Botanici Bucurestiensis (Eastern European plants)
Paper History (International Association of Paper Historians)
Studia Orientalia Electronica (Finnish Oriental Society)
Entomologica Fennica (insects of the Palaearctic)
Memoranda Societatis pro Fauna et Flora Fennica (fauna and flora of the Palaearctic)
Dædalus : Journal of the American Academy of Arts & Sciences. Has about a third of the recent issues free in PDF, and the majority of issues free before 2010. Not to be confused with the Bulletin of the American Academy of Arts & Sciences.
IARC Monographs series which surveys suspected and known carcinogens.
Full-text papers and free publications of The Design Society (Seems to be mostly engineering and industrial design, in case you were wondering why a website for designers has a logo/template that looks so mundane)
National Cartoonist magazine (National Cartoonists Society Foundation, USA) (Added to Directory only, as it’s stored on Issuu)
Cartoon History articles collection at The Political Cartoon Society.
International Union for Conservation of Nature publication archive (“one of the world’s most comprehensive ranges of authoritative publications, reports, guidelines and databases for conservation and sustainable development”)
The free ebooks at O’Reilly Media.