This web app is in progress.
Its purpose is to provide a library for any code or other relevant knowledge I use and want to store. It uses a tag system and search box for quick finding.
In addition there is a flashcard system being developed for studying those important hard to remember details. It will use both a standard flash card system and the Spacial Retrieval Method. A clever spacing system to make those neurons work harder. https://en.wikipedia.org/wiki/Spaced_retrieval
October CMS is at the heart of this project. https://octobercms.com/
It is a great Laravel based CMS.