CultureMonkey has good ui/ux and also provide functionality to provide anonymous survey to take your organization to the next level

The best part about the tool is its pulse survey feature. We can conduct short, crisp and efficient surveys at regular intervals and collect feedback quickly. It helped us draw patterns of improvements and take deep insights into what's working and what's not.

I liked the idea of full fleshed reporting on the dashboard. This has made our life easier just by clicking on the dashboards and you get the info out of that survey easily.