I just put up the beta version of http://enduserfeedback.com up today. This is a very simple platform which gives your users a way to submit ideas for new features (or vote on existing ideas) for your product or service. I needed something like this for my own products but the competition charges obscene monthly fees for this service so I built my own.
Built in Yii2 of course. Plan to keep it free for the first 100-200 users. Feel free to sign up and use it but note this is only in beta. Much more to be done before its ready for show time.