A conversation editor for (NWN)Neverwinter Nights 1 & 2
https://neverwintervault.org/project/nwnee/other/tool/flamewind-conversation-editor-20
For NWN 1 files can be imported or exported using https://github.com/jakkn/nwn-devbase/ or the nwn-gff tool from https://github.com/niv/nwn-lib