
I have used Culture Amp at several organizations, throughout the last decade. They are an organization that is a pleasure to work with (incredibly helpful support and service) and to use (great UI and features, continuously improving. The integration of the performance features (feedback, goals, 1:1 notes) used throughout the year all tie back to the annual talent review making is a great 1-stop shop for People Managers. Review collected by and hosted on G2.com.
There are some features that are pretty fully formed and don't allow for a tremendous amount of customization -- like Goals. With organizations that have robust Goal / OKR programs already in place it might be hard to retrofit programs into the Culture Amp module. Not impossible - but not as intuitive and straightforward as one might hope. Review collected by and hosted on G2.com.