Inquisitor is an engine for browser and multiplatform Interactive Fiction works. It bares similarities to Twine while facilitating creation of worlds with locations and items.
Inky by Inkle Alternatives
Inky by Inkle is described as 'Editor that uses the Ink narrative scripting language and allows you to play and test your interactive (game) narrative stories on the fly' and is a game development tool in the news & books category. There are more than 25 alternatives to Inky by Inkle for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best Inky by Inkle alternative is Twine, which is both free and Open Source. Other great apps like Inky by Inkle are Ren'Py, Capsule VN Engine, Ink by Inkle and Inklewriter.