Senatus - Upvote for questions around a given topic.

BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.

Sli.do - Slido is the ultimate Q&A and polling platform for live and virtual meetings and events. It offers interactive Q&A, live polls and insights about your audience.

Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.

LiveQ - LiveQ is an interactive presentation software that lets audience can ask & vote questions anonymously. You can collect the best questions that you should answer. Loved by teachers, speakers, event owners.

Bizness Apps - Create your own app or become a reseller and build apps for others