CiteAb Ltd is a biotechnology company located in Bath, England that offers an antibody search facility. CieAb ranks antibodies by the number of times they have been cited. This allows researchers to easily find antibodies that have been used in peer-reviewed publications and the accompanying citations are listed, so users can check the data contained within the publications. This makes CiteAb a useful resource for identifying antibodies for experiments and also for finding information to demonstrate antibody validation (Helsby et al., BMC Cell Biol 15:6, 2014) Registration not required.