I don't think one currently exists, but it would be an interesting project. There are plenty of trackers for CVEs but in terms of project ethics, acquisitions, etc., there's a space for it.

The two main problems I can see are:

1. How do you define 'negative'? An open source application being acquired is often a bad thing, but not always. An acquisition by FUTO is more likely to be viewed positively than an acquisition by Microsoft, but either can be interpreted positively or negatively depending on the person.

2. Community involvement is absolutely critical. If I were running a service like this (for example), I would only really be keeping up on the services I use and care about. I would need others to submit info and then verify it.