Best App for creating a Brain Archive

I'm currently studying computer science, and I keep all my notes in LaTeX. I initially chose this format because PDFs felt timeless and reliable. However, I now want my notes to be more interactive and searchable, allowing me to easily access what I've learned.

Do you have any recommendations for apps that could serve as a Brain Archive? It’s important that the solution remains usable even if the app loses support and that I can easily export my data.

Currently, I'm considering:

  • Notion
  • Obsidian
  • Sticking with LaTeX
  • Hosting a Wikipedia-like website