Your results contain 3 solutions with the following criteria :

Other
Solution Smile rating Users rating Popularity
LimeSurvey LimeSurvey 3.3 Smile 4.0 Visitors
53%   Popularity on the site
OpenX OpenX 3.2 Smile No rating
47%   Popularity on the site
WSO2 API Manager WSO2 API Manager 4.3 Smile 3.6 Visitors
0%   Popularity on the site