Depending on which particular subject you are interested in:

- The plugin:

https://wielder.victor.earth/Welcome shows the sort of things you can build with Wielder. The github repository for the library is here https://github.com/victorb/obsidian-wielder

- How To Solve it

The key ideas behind How To Solve It are that for a lot of our challenges there are strategies we can use to tackle them effectively. How To Solve It expounds on how to go about understanding a problem, understanding the connection of the data you have with what you don't know, how to make problems more tractable, carrying out a plan, and evaluating the results.

- Untools

A site dedicated to listing various strategies for thinking, communicating and prioritization; they sell templates similar in nature to what I'm building, but I depart sharply from them in my desired document representation choice for templates - Zettlekastian graph continuations for me versus linear documents for them.

- My own tool

This is currently private and not yet ready for public consumption. I have a whole lot of philosophical backing for what I'm trying to build but it is still very far from generating utility at the level I want it too. Later today I'll see about moving some private notes into a blog post going into more depth about what I'm building and why.