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

Text Fiction - Play classic text adventure games like Zork or the Hitchhiker's Guide to the Galaxy on your Android smartphone for free!

Ink by Inkle - ink is a popular open source scripting language for branching stories, designed for writers

Windows Frotz - Windows Frotz is an interpreter that can play all the old Infocom text adventures.

Playfic - Playfic is an online community that lets you write, remix, share, and play interactive text-based...

Yarn Spinner - Tool for creating interactive dialogue and games in Unity.