I'm still looking for a knowledge base apps that suits me but to no avail haven't found one. Currently, I use Ghost CMS to manage the knowledge that I have learned because it's easy to access from anywhere, it supports markdown, it has search function built-in, and I can host it myself using NAS. However, It's not a knowledge base apps. If Ghost CMS has the capability of Logseq and Obsidian, I'd like to think it's the one I've been looking for.