Ask HN: How do you document your knowhow, past projects and lessons?

GitHub gist， google drive（why Gmail drafts?), mediawiki

At the moment it's a collection of Markdown files in a Git repo. I'm thinking about moving to a wiki solution but I haven't settled on one yet.

Has anyone used multiple wikis and can comment on the pros and cons? There are so many out there. The only one I know I don't like is Tiddlywiki.

OneNote. The hierarchical breakdown of Notebook, Section, and Pages is quite useful. I use one page as a linear, chronological "Plan for today" journal, with links to subject matter on other Pages that naturally get organized into Sections (ML learning, Coursera - Scala, Health, Attitude / Thinking, etc;).

Evernote's Search is much better than OneNote's (Windows' Search), searching seamlessly even inside attachments, but I absolutely hate the look of Evernote pages; just a personal thing. Could be something as simple as Tahoma vs. Calibri, but I think it's more than that...OneNote really looks good to my subjective eye. Plus I like the keyboard shortcuts.

For PDFs, get really good at whatever Reader you use w.r.t. annotation tools. I love PDF-Xchange Viewer for annotation (a Windows product).

Evernote

Github Gist, Bear Note taking app(hashtags, hierarchical ordering, etc) and sometimes jrnl cli tool