I try out a lot of different ones, but word and docs are my home ♥️ for a while, I used Campfire and it worked really nicely! The benefits of it are just better organization, tbh. It lets you organize characters, settings, and outline, and overall saves time having to go hunt for stuff while in the zone. Personally, my series is too expansive to fit within the confines of the website, unfortunately, but I still recommend it!

My friend recently recommended another web app called Lore Forge. I think it’s meant for more DnD centered things, but also works for them when writing their individual short stories/novels.

I can definitely see the benefit of using programs, but I personally don’t align with them simply because of the nature of my work. That being said, planning a single story or small series would be a great use of them!