We originally went with Knowledge Owl because it was light-weight and did not enforce a ticketing and chat customer support as part of the package--as we use someone else's platform for these purposes. We were mainly interested in a Wordpress-y type knowledge base that would allow us to point customers and not worry about constructing a complex file structure for a knowledge base.

The software's design is pretty customizable so you can have your own branding at no extra cost. There's strong typographical and design decisions that make complex workflows easily readable by customers. Review collected by and hosted on G2.com.

The design themes and interface aren't hugely modern and don't feel terribly resilient sometimes. There have been some security concerns as well: for a while, if you googled "knowledge owl login", Google would provide you with a link that looked like Knowledge Owl and would accept your credentials, but it would not be pointing at knowledgeowl's domain (as far as I could see). Occasionally the UI on the administrator end was not quite as intuitive, but on the whole things were discoverable. Review collected by and hosted on G2.com.