I'm obviously a huge fan of Scrivener. I use it every day to write and organize content for the Critical Thinker Academy, including drafting scripts for my video courses, and managing all the references I use when writing.
Here's a shot of the document I'm currently using to write posts for my text-based courses.
There are Mac and Windows versions of Scrivener, and Regular editions and discounted Educational editions for students and teachers.
Below I have a set of links that will take you to a page where you can purchase your preferred version of Scrivener.
Note: these are "affiliate links", which means that if you use this link to purchase a copy, I receive a small percentage of the purchase price. Any revenue I receive goes into supporting the content on the Academy. This is a way that you can support the Critical Thinker Academy, even if you're not a monthly Patreon supporter.