A filament organizer comprises a support having a first surface opposite a second surface and further includes a lockable spool and a rotary spool adjacent to the first surface of the support. The organizer has a tensioner attached to the second surface of the support for attachment to the rotary spool by a tension wire to apply tension thereto to transmit tension to a filament disposed between the lockable spool and the rotary spool. Selective reduction in tension on a filament is possible using a tension relief assembly attached to the support. A stacked configuration of a plurality of filament organizers may be formed by suitable alignment of supports.