Some of the most typical are
- Scrivener, Page Four, and other writing programs
- The Snowflake Method
- Basic Outline (the main plot points, with as much detail as you'd like)
I use none of these, save for a bit of the Basic Outline in the very beginning. So how do I outline? I don't know if it has an official name, as I rarely see it used, so for now I'd like to call it The Journal Method.