Ask HN: What intranet to keep a directory, wiki & files for a growing startup?

Our team is growing (heading towards the 30+ headcount) and I am trying to find the right tool for an intranet, as we are opening new offices around the world.

What I want is simply: A directory of people to know who does what, as well as a wiki and simple project management.

Asana and trello are in use, but they don't do the whole wiki/directory part, and we use insightly for our CRM and heavily Google drive/dropbox, which would be nice to integrate. I've poked around Jira, Podio & co, but not convinced yet.

What do you use?

Thanks!