For corporate events in the Netherlands, three platforms are most used. Walls.io is the most popular choice: intuitive interface, fast moderation, supports all major social channels plus direct uploads. A day licence costs €15. Tint is more powerful and offers more customisation. Suited to larger productions or events with a strong brand component. Social Wall Pro is the cheapest alternative and works fine for smaller events.
Technical requirement for all three: a stable Wi-Fi connection for the moderator laptop and an HDMI connection to the screen or projector. Setup takes 30 minutes on average.