Apart from normal editors such as LibreOffice or Word, do you use programs specifically designed to keep track of the characters, places and chapters of your novels or stories? I have never felt the need. I have found OmniaWrite, for example, but I have not tried it yet. Does anyone use it or similar ones? Does it really help?
I use Manuskript, which is a pretty nice FOSS writing program. It lets you define a whole encyclopedia about all aspects of your story (characters, locations, magic, technology, etc.) and breaks the whole thing up into scenes that can be reordered at will, put into folders to create larger sections (chapters, or even sub-chapters), etc. And, when you're done, you can have it export the project (any/all of it as you wish) to just about any format: text, Word, PDF, whatever.
I've also been toying around a bit with Obsidian. It's not really meant as a writing app, but you can definitely do deep outlines as well as all of the same type of encyclopedia/wiki setup to help you keep track of everything.