to Kicad from other EDA tools.
edif2kicad / EDIF to EEschema schematic import
Tools with EDIF out writer:
o OrCad
o DataXpress
o Viewlogic
o IntuSoft ICAP
o Protel nVisage
o PADS ?
o P-CAD ?
o EDIF viewer (www.cimmetry.com)
o EDIF translator (www.elgris.com/content/edif_overview.html)
pcb123net2kicad / converts a pcb123 netlist to Kicad default format