I appreciate good tools. From the beginning, I built the Dialogue System to support Chat Mapper. After all, they’ve been refining their editor and the underlying data structure for years, allowing you to write the most expressive dialogue of any interactive dialogue tool I’ve come across. (For those who prefer a more compact style to Chat Mapper’s graph display, I also wrote an outline-style editor that works with the same underlying data structure.)
Chat Mapper is a professional tool available at indie prices. If you’re not already a fan, I encourage you to check it out at: http://www.chat-mapper.com/