The development of genetic resources is becoming increasingly important to accelerate functional genomics and breeding programs. The relational mutant database ‘TOMATOMA’ (http://tomatoma.nbrp.jp/) was originally developed to provide information on tomato mutagenised populations developed in the Micro-Tom background, which is a rapid growth variety. Shikata et al (on pp. e11) developed new Micro-Tom mutagenesis populations through a second round EMS treatment of M3 mutagenized lines, generating 4,952 lines of M3M2 mutagenized seeds. ‘TOMATOMA’ has now been updated with added information on phenotypes and metabolic profiling for 618 and 171 individual mutants, respectively. The data for Brix values and carotenoid contents in mature fruits are also now searchable and these genetic resources are available upon request through ‘TOMATOMA’. TOMATOMA is one of twelve databases featured in this year’s database issue –available online only (see also Ohyanagi et al. 2016, in this issue).