I have been working on adding CKEditor plugins to the Alloy Editor in Liferay DXP. There are some articles online at Liferay but they focus more on packaged or custom developed plugins. The trick is to create an OSGI module fragment.
In mid-November of last year IBM released a new Software as a Service (SaaS) content management offering known as IBM Watson Content Hub. Base22 participates in a design partner program with IBM, and as a part of that, we have had the opportunity to review plans and provide feedback to the product team on various aspects of this offering since prior to the initial release. As a result, we have been closely tracking the evolution of the product and we believe that if you haven’t had an opportunity to check out this solution yet, it is definitely worth a look now.