You can run your own copy of the Twine development tool, either by hosting it on your website or by running it in XAMPP. For example, here it is running on my own website. And here is the 4 Mb download if you want a copy. I also have a copy here on my Onedrive.

I highly recommend reading the following:

• Awesome Minds - Video Game Creators: An Entertaining History — Alejandro Arbona (2018)
• Chris Crawford on Interactive Storytelling (2013)
• Create Interactive Stories in Twine — Brian Mayer (2019)
• Creating Interactive Fiction with Inform 7 — John Ransley & Aaron Reed (2010)
• Cybertext - Perspectives on Ergodic Literature — Espen J. Aarseth (1997)
• Inform - A Design System for Interactive Fiction — Graham Nelson & Emily Short (2015)
• Interactive Storytelling Techniques for the 21st Century — Andrew Glassner (2017)
• Letters to the Cyborgs — Judyth V. Baker (2016)
• Make Your Own Twine Games — Anna Anthropy (2019)
• Making Games: The Politics & Poetics of Game Creation — Stefan Werning (2021)
• Mostly Codeless Game Development — Robert Ciesla (2017)
• Neverending Stories - The Popular Emergence of Digital Fiction — R. Lyle Skains (2022)
• New Narratives - Stories & Storytelling in the Digital Age — Thomas Bronwen (2012)
• Playing the Text, Performing the Future — Meifert (2013)
• Reading Digital Fiction — Narrative, Fiction & Mediality — Taylor & Francis (2024)
• The Computer As Medium - Social Cognitive Computational Perspectives — Berit Holmqvist (1994)
• The End of Books, or Books Without End? — Jane Yellowlees Douglass (2001)
• The Twine Cookbook — Dan Cox and Chris Klimas (2024)
• Second Person Roleplaying & Story in Games & Playable Media — Pat Harrigan (2010)
• Twisty Little Passages — Nick Montfort (2005)
• Videogames for Humans - Twine Authors in Conversation — Merritt Kopas (2015)
• Writing Interactive Fiction with Twine — Melissa Ford (2016)

dev.tw
        passworded access to Developer Notes
dorn_head_foot.tw
        contains header and footer passage 
          for use with hbar and bbar tags\
dorn_intro.tw
        contains passages comprising the Intro to the game/story
dorn_2.tw
        contains ?# passages that form the beginning of this hyperfic
dorn_last.tw
        contains scripts and special passages
        contains code for the playtime macro
        contains code for the fade-in macro
        contains code for hashing to enable passwording
        contains code to implement [nosave] tag for passages
        contains Config data:
          maxSlotSaves = 3
          maxStates = 50
          saves.isAllowed conditions
        contains code to check for [noreturn] tag, for menuing
        contains code to add visits to passage(s) programmatically 
               during initialization (for testing)
        contains code in PassageReady to track total number of passage visits