3R Guide: database which provides an overview of guidelines, databases, journals, email lists, regulations and policies which may help researchers to implement the 3Rs.
Altbib: Bibliography on Alternatives to the Use of Live Vertebrates in Biomedical Research and Testing. The National Library of Medicine (NLM) developed ALTBIB to provide access to PubMed citations for users seeking information on alternatives to animal testing. Many citations provide access to free full text.
EUROECOTOX database of bioassays: alternative methods for ecotoxicology testing
FCS (fetal calf serum)-free Database: access the range of commercially available serum-free media for cell-culture, as well as medium compositions; supported by 3Rs-Centre ULS in collaboration with Animal Free Research UK.