[wolpoli]

Scrivener is a popular writing program that allows you to compose pieces of your content and reoganize them later as you put your document together. I encourage you to give it a try as it might just be what you are looking for.

[Zeminary]

Scrivener was my first writing app that wasn't a part of MS Office. I also recommend it.

Tangentially, for anyone wondering — Zeminary isn't meant to replace other PKM and writing apps. You can have your ideas elsewhere, then assemble them in Zeminary.

Zeminary is complementary.