Your results contain 3 solutions with the following criteria :

BPM / Workflow
Solution Smile rating Users rating Popularity
Activiti Activiti 3.5 Smile 2.6 Visitors
50%   Popularity on the site
bonitasoft Bonita 4.2 Smile 4.2 Visitors
77%   Popularity on the site
JBPM JBPM 3.0 Smile No rating
33%   Popularity on the site