Workona - A better way to work in the browser.

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

OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.

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

Session Buddy - Manage Your Browser Sessions

Quest - Quest lets you create sophisticated text-based games, without having to program.