What system to take to organize the knowledge base / wiki?

Question

CMS

Good morning
I am choosing an engine for organizing a knowledge base (internal Help), which must meet the following criteria
1. Unlimited category nesting
2. Ability to link the same category to several categories
3. Ability to link articles to several categories
4. Introducing an article, with the ability to expand the number of fields through the settings when starting an article.
5. The presence of an API so that we can access the categories and the articles themselves
What can you advise?
Thanks

Answer 1

What could be better than MediaWiki