[1] - http://freemind.sourceforge.net/wiki/index.php/Main_Page
Some of the previous discussions about org-mode:
https://news.ycombinator.com/item?id=2423276
https://news.ycombinator.com/item?id=8668271
https://news.ycombinator.com/item?id=2091850
From org-mode website: Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.
[1] http://osmo-service.tiddlyspace.com/ServiceUpdate20160112
Wiki gardening is a thing, though, and without it, doom will follow.
At my last job we did the same thing, but I heavily customized the wiki to include endpoint testing, DB access, context-sensitive autocomplete, etc. It was pretty cool.
Lately I use nvAlt, and now I may switch to Quiver (OS X), for a lot of that. I might even switch to Dash (of which there are Linux variants) after I explore its snippets and note-taking capabilities.