A modular organizer system is configured to sort and store items. The modular organizer system has a first rail assembly with a first sidewall further comprising a first sidewall upper member joined to a first sidewall lower member with a first plurality of upright support members. A second rail assembly has a second sidewall, proximate the first sidewall with a second sidewall upper member joined to a second sidewall lower member with a second plurality of upright support members. A segregated storage space exists between the first sidewall and the second sidewall.