A browser-based text adventure game engine and sample game

A cross-platform, multimedia interpreter for TADS adventure games.

Fractive is a free, open-source, Markdown-based hypertext authoring tool for writing interactive fiction.

A cross-platform, multimedia interpreter for Hugo adventure games.

An interactive fiction (text adventure) library in Haskell, inspired by Inform7.

IFML 2.0 (Interactive Fiction Markup Language) - interactive fiction platform based on Russian

Multiplayer interactive fiction system based on Inform 7

Create and play text-based games in the style of "Her Story"

Partial reconstruction of Versu's Praxis language

The main TAME Interactive Fiction implementation (Java and JS) plus compiler/console client.

Framework JavaScript para ficción interactiva / JavaScript framework for interactive fiction

Интерпретатор текстовых квестов URQ

a C64 interactive fiction engine, with player also for Windows+Linux+Web

A modern MU* server implementation in Python 3 using asynchronous networking and MongoDB object storage, with integral web-based client.

Interactive Novel in PHP

An RPG-lite interactive fiction engine written in PHP

Z-code engine for interactive fiction

Cat's Eye Technologies' fork of ZPlet, an interpreter for interactive fiction in Infocom's Z-Machine format

A Haskell-based interactive fiction engine