Chat Mapper

Chat Mapper is a branching dialog editor from Urban Brain Studios with Lua scripting and XML export. Non-Linear Branching Tree Graph Visualization, Conversation Simulator using TTS voices, and multiple export formats for printing actor scripts and for getting dialog into various 3rd-party tools like Dialog System for Unity.

It is free to try, with pricing that ranges from $65 for an Indie License, $495 for Commercial, and an If You Have To Ask You Can’t Afford “Publisher” level which includes a player for Unity.

http://www.chatmapper.com

Twine – Non-Linear Storytelling

Twine-logoTwine is an open-source tool for telling interactive, nonlinear stories.

You don’t need to write any code to create a simple story with Twine, but you can extend your stories with variables, conditional logic, images, CSS, and JavaScript when you’re ready.

Twine publishes directly to HTML, so you can post your work nearly anywhere. Anything you create with it is completely free to use any way you like, including for commercial purposes.

http://twinery.org

http://www.auntiepixelante.com/twine/