H5P provides a very tight integration with Sakai through H5P.com.
With H5P.com content may be created from within Sakai, you get your own H5P content repository in Sakai and grades are stored in Sakai. H5P.com also provides analytics within Sakai so that teachers may see what the learners answered to the different questions within the H5P Content.
The images above are screenshots of
(1) grades from H5P.com in Sakai
(2) the H5P.com repository in Sakai
(3) editing H5P.com content in Sakai
(4) viewing H5P.com content in Sakai