I used Confluence. It's not cheap in the long run as up to 10 users is free, but then is $5 month per user. That said, it's one of the best programs I've ever

I used Confluence. It's not cheap in the long run as up to 10 users is free, but then is $5 month per user. That said, it's one of the best programs I've ever used for documentation and it checks your points. I don't include a link as this is a new account and I'd be flagged as a bot.