Very interesting solution. eXo is open source so it's customisable and extensible while still offering a lot of features right out-of-the-box. Support from the community is fine. The platform is available in the cloud or on-premise, which is a good choice to have.

Easy UI. Comfortable for average users. Lots of additional functionality, e.g chat, wiki, document store.

eXo Platform is a rich and powerful software. All my collaboration and content needs in a single tool.