Software Recommendations for Writing a Novel?

[Halei-Helai]

As the title says, I am looking for software recommendations. Obviously, I don't really mean the word processing part (unless there is something more suited to novel writing than Word or Google Docs because of extra features).

What I want to know would be if there are any programs that help keep track of plot points and with organization? With a bunch of stuff that interlinks things start to become a bit of a headache, and I was never an index card sort of person.

Does anybody have any ideas on this?

[anoni]

You could use flow chart programs (you can find hundreds online) that are designed to make simple flowcharts, so you can keep track of character relationships and interactions.